CVE-2026-3784

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Source
https://cve.org/CVERecord?id=CVE-2026-3784
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-3784.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-3784
Aliases
Downstream
Related
Published
2026-03-11T10:09:21.418Z
Modified
2026-05-18T06:00:05.330796074Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
wrong proxy connection reuse with credentials
Details

curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "last_affected": "8.18.0"
                },
                {
                    "last_affected": "8.17.0"
                },
                {
                    "last_affected": "8.16.0"
                },
                {
                    "last_affected": "8.15.0"
                },
                {
                    "last_affected": "8.14.1"
                },
                {
                    "last_affected": "8.14.0"
                },
                {
                    "last_affected": "8.13.0"
                },
                {
                    "last_affected": "8.12.1"
                },
                {
                    "last_affected": "8.12.0"
                },
                {
                    "last_affected": "8.11.1"
                },
                {
                    "last_affected": "8.11.0"
                },
                {
                    "last_affected": "8.10.1"
                },
                {
                    "last_affected": "8.10.0"
                },
                {
                    "last_affected": "8.9.1"
                },
                {
                    "last_affected": "8.9.0"
                },
                {
                    "last_affected": "8.8.0"
                },
                {
                    "last_affected": "8.7.1"
                },
                {
                    "last_affected": "8.7.0"
                },
                {
                    "last_affected": "8.6.0"
                },
                {
                    "last_affected": "8.5.0"
                },
                {
                    "last_affected": "8.4.0"
                },
                {
                    "last_affected": "8.3.0"
                },
                {
                    "last_affected": "8.2.1"
                },
                {
                    "last_affected": "8.2.0"
                },
                {
                    "last_affected": "8.1.2"
                },
                {
                    "last_affected": "8.1.1"
                },
                {
                    "last_affected": "8.1.0"
                },
                {
                    "last_affected": "8.0.1"
                },
                {
                    "last_affected": "8.0.0"
                },
                {
                    "last_affected": "7.88.1"
                },
                {
                    "last_affected": "7.88.0"
                },
                {
                    "last_affected": "7.87.0"
                },
                {
                    "last_affected": "7.86.0"
                },
                {
                    "last_affected": "7.85.0"
                },
                {
                    "last_affected": "7.84.0"
                },
                {
                    "last_affected": "7.83.1"
                },
                {
                    "last_affected": "7.83.0"
                },
                {
                    "last_affected": "7.82.0"
                },
                {
                    "last_affected": "7.81.0"
                },
                {
                    "last_affected": "7.80.0"
                },
                {
                    "last_affected": "7.79.1"
                },
                {
                    "last_affected": "7.79.0"
                },
                {
                    "last_affected": "7.78.0"
                },
                {
                    "last_affected": "7.77.0"
                },
                {
                    "last_affected": "7.76.1"
                },
                {
                    "last_affected": "7.76.0"
                },
                {
                    "last_affected": "7.75.0"
                },
                {
                    "last_affected": "7.74.0"
                },
                {
                    "last_affected": "7.73.0"
                },
                {
                    "last_affected": "7.72.0"
                },
                {
                    "last_affected": "7.71.1"
                },
                {
                    "last_affected": "7.71.0"
                },
                {
                    "last_affected": "7.70.0"
                },
                {
                    "last_affected": "7.69.1"
                },
                {
                    "last_affected": "7.69.0"
                },
                {
                    "last_affected": "7.68.0"
                },
                {
                    "last_affected": "7.67.0"
                },
                {
                    "last_affected": "7.66.0"
                },
                {
                    "last_affected": "7.65.3"
                },
                {
                    "last_affected": "7.65.2"
                },
                {
                    "last_affected": "7.65.1"
                },
                {
                    "last_affected": "7.65.0"
                },
                {
                    "last_affected": "7.64.1"
                },
                {
                    "last_affected": "7.64.0"
                },
                {
                    "last_affected": "7.63.0"
                },
                {
                    "last_affected": "7.62.0"
                },
                {
                    "last_affected": "7.61.1"
                },
                {
                    "last_affected": "7.61.0"
                },
                {
                    "last_affected": "7.60.0"
                },
                {
                    "last_affected": "7.59.0"
                },
                {
                    "last_affected": "7.58.0"
                },
                {
                    "last_affected": "7.57.0"
                },
                {
                    "last_affected": "7.56.1"
                },
                {
                    "last_affected": "7.56.0"
                },
                {
                    "last_affected": "7.55.1"
                },
                {
                    "last_affected": "7.55.0"
                },
                {
                    "last_affected": "7.54.1"
                },
                {
                    "last_affected": "7.54.0"
                },
                {
                    "last_affected": "7.53.1"
                },
                {
                    "last_affected": "7.53.0"
                },
                {
                    "last_affected": "7.52.1"
                },
                {
                    "last_affected": "7.52.0"
                },
                {
                    "last_affected": "7.51.0"
                },
                {
                    "last_affected": "7.50.3"
                },
                {
                    "last_affected": "7.50.2"
                },
                {
                    "last_affected": "7.50.1"
                },
                {
                    "last_affected": "7.50.0"
                },
                {
                    "last_affected": "7.49.1"
                },
                {
                    "last_affected": "7.49.0"
                },
                {
                    "last_affected": "7.48.0"
                },
                {
                    "last_affected": "7.47.1"
                },
                {
                    "last_affected": "7.47.0"
                },
                {
                    "last_affected": "7.46.0"
                },
                {
                    "last_affected": "7.45.0"
                },
                {
                    "last_affected": "7.44.0"
                },
                {
                    "last_affected": "7.43.0"
                },
                {
                    "last_affected": "7.42.1"
                },
                {
                    "last_affected": "7.42.0"
                },
                {
                    "last_affected": "7.41.0"
                },
                {
                    "last_affected": "7.40.0"
                },
                {
                    "last_affected": "7.39.0"
                },
                {
                    "last_affected": "7.38.0"
                },
                {
                    "last_affected": "7.37.1"
                },
                {
                    "last_affected": "7.37.0"
                },
                {
                    "last_affected": "7.36.0"
                },
                {
                    "last_affected": "7.35.0"
                },
                {
                    "last_affected": "7.34.0"
                },
                {
                    "last_affected": "7.33.0"
                },
                {
                    "last_affected": "7.32.0"
                },
                {
                    "last_affected": "7.31.0"
                },
                {
                    "last_affected": "7.30.0"
                },
                {
                    "last_affected": "7.29.0"
                },
                {
                    "last_affected": "7.28.1"
                },
                {
                    "last_affected": "7.28.0"
                },
                {
                    "last_affected": "7.27.0"
                },
                {
                    "last_affected": "7.26.0"
                },
                {
                    "last_affected": "7.25.0"
                },
                {
                    "last_affected": "7.24.0"
                },
                {
                    "last_affected": "7.23.1"
                },
                {
                    "last_affected": "7.23.0"
                },
                {
                    "last_affected": "7.22.0"
                },
                {
                    "last_affected": "7.21.7"
                },
                {
                    "last_affected": "7.21.6"
                },
                {
                    "last_affected": "7.21.5"
                },
                {
                    "last_affected": "7.21.4"
                },
                {
                    "last_affected": "7.21.3"
                },
                {
                    "last_affected": "7.21.2"
                },
                {
                    "last_affected": "7.21.1"
                },
                {
                    "last_affected": "7.21.0"
                },
                {
                    "last_affected": "7.20.1"
                },
                {
                    "last_affected": "7.20.0"
                },
                {
                    "last_affected": "7.19.7"
                },
                {
                    "last_affected": "7.19.6"
                },
                {
                    "last_affected": "7.19.5"
                },
                {
                    "last_affected": "7.19.4"
                },
                {
                    "last_affected": "7.19.3"
                },
                {
                    "last_affected": "7.19.2"
                },
                {
                    "last_affected": "7.19.1"
                },
                {
                    "last_affected": "7.19.0"
                },
                {
                    "last_affected": "7.18.2"
                },
                {
                    "last_affected": "7.18.1"
                },
                {
                    "last_affected": "7.18.0"
                },
                {
                    "last_affected": "7.17.1"
                },
                {
                    "last_affected": "7.17.0"
                },
                {
                    "last_affected": "7.16.4"
                },
                {
                    "last_affected": "7.16.3"
                },
                {
                    "last_affected": "7.16.2"
                },
                {
                    "last_affected": "7.16.1"
                },
                {
                    "last_affected": "7.16.0"
                },
                {
                    "last_affected": "7.15.5"
                },
                {
                    "last_affected": "7.15.4"
                },
                {
                    "last_affected": "7.15.3"
                },
                {
                    "last_affected": "7.15.2"
                },
                {
                    "last_affected": "7.15.1"
                },
                {
                    "last_affected": "7.15.0"
                },
                {
                    "last_affected": "7.14.1"
                },
                {
                    "last_affected": "7.14.0"
                },
                {
                    "last_affected": "7.13.2"
                },
                {
                    "last_affected": "7.13.1"
                },
                {
                    "last_affected": "7.13.0"
                },
                {
                    "last_affected": "7.12.3"
                },
                {
                    "last_affected": "7.12.2"
                },
                {
                    "last_affected": "7.12.1"
                },
                {
                    "last_affected": "7.12.0"
                },
                {
                    "last_affected": "7.11.2"
                },
                {
                    "last_affected": "7.11.1"
                },
                {
                    "last_affected": "7.11.0"
                },
                {
                    "last_affected": "7.10.8"
                },
                {
                    "last_affected": "7.10.7"
                },
                {
                    "last_affected": "7.10.6"
                },
                {
                    "last_affected": "7.10.5"
                },
                {
                    "last_affected": "7.10.4"
                },
                {
                    "last_affected": "7.10.3"
                },
                {
                    "last_affected": "7.10.2"
                },
                {
                    "last_affected": "7.10.1"
                },
                {
                    "last_affected": "7.10"
                },
                {
                    "last_affected": "7.9.8"
                },
                {
                    "last_affected": "7.9.7"
                },
                {
                    "last_affected": "7.9.6"
                },
                {
                    "last_affected": "7.9.5"
                },
                {
                    "last_affected": "7.9.4"
                },
                {
                    "last_affected": "7.9.3"
                },
                {
                    "last_affected": "7.9.2"
                },
                {
                    "last_affected": "7.9.1"
                },
                {
                    "last_affected": "7.9"
                },
                {
                    "last_affected": "7.8.1"
                },
                {
                    "last_affected": "7.8"
                },
                {
                    "last_affected": "7.7.3"
                },
                {
                    "last_affected": "7.7.2"
                },
                {
                    "last_affected": "7.7.1"
                },
                {
                    "last_affected": "7.7"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3784.json",
    "cna_assigner": "curl"
}
References

Affected packages

Git / github.com/curl/curl

Affected ranges

Type
GIT
Repo
https://github.com/curl/curl
Events
Introduced
546572da0457f37c698c02d0a08d90fdfcbeedec
Fixed
2eebc58c4b8d68c98c8344381a9f6df4cca838fd
Database specific 
{
    "cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "7.7"
        },
        {
            "fixed": "8.18.0"
        }
    ]
}

Affected versions

Other
before_ftp_statemachine
before_urldata_rename
curl-7_10
curl-7_10_1
curl-7_10_2
curl-7_10_3
curl-7_10_4
curl-7_10_5
curl-7_10_6
curl-7_10_7
curl-7_10_8
curl-7_11_0
curl-7_11_1
curl-7_11_2
curl-7_12_0
curl-7_12_1
curl-7_12_2
curl-7_12_3
curl-7_13_0
curl-7_13_1
curl-7_13_2
curl-7_14_0
curl-7_14_1
curl-7_15_0
curl-7_15_1
curl-7_15_2
curl-7_15_3
curl-7_15_4
curl-7_15_5
curl-7_15_6-prepipeline
curl-7_16_0
curl-7_16_1
curl-7_16_2
curl-7_16_3
curl-7_16_4
curl-7_17_0
curl-7_17_0-preldapfix
curl-7_17_1
curl-7_18_0
curl-7_18_1
curl-7_18_2
curl-7_19_0
curl-7_19_1
curl-7_19_2
curl-7_19_3
curl-7_19_4
curl-7_19_5
curl-7_19_6
curl-7_19_7
curl-7_20_0
curl-7_20_1
curl-7_21_0
curl-7_21_1
curl-7_21_2
curl-7_21_3
curl-7_21_4
curl-7_21_5
curl-7_21_6
curl-7_21_7
curl-7_22_0
curl-7_23_0
curl-7_23_1
curl-7_25_0
curl-7_26_0
curl-7_27_0
curl-7_28_0
curl-7_28_1
curl-7_29_0
curl-7_30_0
curl-7_31_0
curl-7_32_0
curl-7_33_0
curl-7_34_0
curl-7_35_0
curl-7_36_0
curl-7_37_0
curl-7_37_1
curl-7_38_0
curl-7_39_0
curl-7_40_0
curl-7_41_0
curl-7_42_0
curl-7_43_0
curl-7_44_0
curl-7_45_0
curl-7_46_0
curl-7_47_0
curl-7_47_1
curl-7_48_0
curl-7_49_0
curl-7_49_1
curl-7_50_0
curl-7_50_1
curl-7_50_2
curl-7_50_3
curl-7_51_0
curl-7_52_0
curl-7_52_1
curl-7_53_0
curl-7_53_1
curl-7_54_0
curl-7_54_1
curl-7_55_0
curl-7_55_1
curl-7_56_0
curl-7_56_1
curl-7_57_0
curl-7_58_0
curl-7_59_0
curl-7_60_0
curl-7_61_0
curl-7_61_1
curl-7_62_0
curl-7_63_0
curl-7_64_0
curl-7_64_1
curl-7_65_0
curl-7_65_1
curl-7_65_2
curl-7_65_3
curl-7_66_0
curl-7_67_0
curl-7_68_0
curl-7_69_0
curl-7_69_1
curl-7_7
curl-7_70_0
curl-7_71_0
curl-7_71_1
curl-7_72_0
curl-7_73_0
curl-7_74_0
curl-7_75_0
curl-7_76_0
curl-7_76_1
curl-7_77_0
curl-7_78_0
curl-7_79_0
curl-7_79_1
curl-7_7_1
curl-7_7_2
curl-7_7_3
curl-7_8
curl-7_8-pre2
curl-7_80_0
curl-7_81_0
curl-7_82_0
curl-7_83_0
curl-7_83_1
curl-7_84_0
curl-7_85_0
curl-7_86_0
curl-7_87_0
curl-7_88_0
curl-7_88_1
curl-7_8_1
curl-7_8_1-pre3
curl-7_9
curl-7_9_1
curl-7_9_2
curl-7_9_3
curl-7_9_3-pre1
curl-7_9_3-pre2
curl-7_9_3-pre3
curl-7_9_4
curl-7_9_5
curl-7_9_5-pre2
curl-7_9_5-pre4
curl-7_9_6
curl-7_9_7
curl-7_9_7-pre2
curl-7_9_8
curl-8_0_0
curl-8_0_1
curl-8_10_0
curl-8_10_1
curl-8_11_0
curl-8_11_1
curl-8_12_0
curl-8_12_1
curl-8_13_0
curl-8_14_0
curl-8_14_1
curl-8_15_0
curl-8_16_0
curl-8_17_0
curl-8_1_0
curl-8_1_1
curl-8_1_2
curl-8_2_0
curl-8_2_1
curl-8_3_0
curl-8_4_0
curl-8_5_0
curl-8_6_0
curl-8_7_0
curl-8_7_1
curl-8_8_0
curl-8_9_0
curl-8_9_1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-3784.json"