CVE-2026-102556

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Source
https://cve.org/CVERecord?id=CVE-2026-102556
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-102556.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-102556
Downstream
AZL (1)
DEBIAN (1)
openSUSE (1)
RHSA (2)
RLSA (1)
ROOT (1)
SUSE (4)
UBUNTU (1)
Related
ALSA (2)
openSUSE (1)
SUSE (4)
Published
2026-09-29T16:11:50Z
Modified
2026-10-17T10:11:59Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H CVSS Calculator
Summary
Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
Details

A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the documented GBytes API can trigger heap corruption or a crash upon receiving a crafted Pong.

Database specific 
{
    "cna_assigner":  "redhat",
    "cwe_ids":  [
        "CWE-843"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102556.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "0:3.6.5-3.el10_2.20"
                        },
                        {
                            "fixed":  "0:2.72.0-16.el9_8.8"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "InverseAffectedRanges"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/gnome/libsoup

Affected ranges

Type
GIT
Repo
https://github.com/gnome/libsoup
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
402d0fa189abfdd2071bab9fa3fc926f4ed7f70d
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.7.3"
                }
            ],
            "source":  "CPE_RANGE"
        }
    ]
}

Affected versions

2.*
2.40.0
2.40.1
2.41.1
2.41.2
2.41.3
2.41.4
2.41.5
2.41.90
2.41.91
2.41.92
2.42.0
2.42.1
2.43.1
2.43.2
2.43.4
2.43.5
2.43.90
2.43.92
2.44.0
2.44.1
2.45.3
2.45.90
2.45.92
2.46.0
2.47.3
2.47.4
2.47.92
2.48.0
2.49.1
2.49.91
2.49.91.1
2.49.92
2.50.0
2.51.3
2.51.90
2.51.92
2.52.0
2.52.1
2.53.1
2.53.2
2.53.90
2.53.92
2.54.0
2.54.0.1
2.54.1
2.55.90
2.56.0
2.57.1
2.58.0
2.59.90
2.59.90.1
2.60.0
2.60.1
2.60.2
2.61.1
2.61.2
2.61.90
2.61.91
2.62.0
2.63.1
2.63.2
2.63.90
2.63.91
2.63.92
2.64.0
2.65.1
2.65.2
2.65.90
2.65.91
2.65.92
2.66.0
2.66.1
2.66.2
2.67.1
2.67.2
2.67.3
2.67.90
2.67.91
2.67.92
2.67.93
2.68.0
2.68.1
2.68.2
2.68.3
2.69.90
2.70.0
2.71.0
2.71.1
2.72.0
2.99.1
2.99.2
2.99.3
2.99.4
2.99.5
2.99.6
2.99.7
2.99.8
2.99.9
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
3.1.1
3.1.2
3.1.3
3.1.4
3.2.0
3.3.0
3.3.1
3.4.0
3.4.1
3.4.2
3.4.3
3.4.4
3.5.1
3.5.2
3.6.0
3.6.1
3.6.2
3.6.3
3.6.4
3.7.1
3.7.2
Other
LIBSOUP_1_99_15
LIBSOUP_1_99_16
LIBSOUP_1_99_17
LIBSOUP_1_99_19
LIBSOUP_1_99_20
LIBSOUP_1_99_22
LIBSOUP_1_99_23
LIBSOUP_1_99_24
LIBSOUP_1_99_25
LIBSOUP_2_1_10
LIBSOUP_2_1_11
LIBSOUP_2_1_12
LIBSOUP_2_1_13
LIBSOUP_2_1_2
LIBSOUP_2_1_3
LIBSOUP_2_1_4
LIBSOUP_2_1_5
LIBSOUP_2_1_6
LIBSOUP_2_1_7
LIBSOUP_2_1_8
LIBSOUP_2_1_9
LIBSOUP_2_23_1
LIBSOUP_2_23_6
LIBSOUP_2_23_91
LIBSOUP_2_23_92
LIBSOUP_2_24_0
LIBSOUP_2_25_1
LIBSOUP_2_25_2
LIBSOUP_2_25_4
LIBSOUP_2_25_5
LIBSOUP_2_25_91
LIBSOUP_2_26_0
LIBSOUP_2_26_0_9
LIBSOUP_2_26_1
LIBSOUP_2_27_1
LIBSOUP_2_27_2
LIBSOUP_2_27_4
LIBSOUP_2_27_5
LIBSOUP_2_27_90
LIBSOUP_2_27_91
LIBSOUP_2_27_92
LIBSOUP_2_28_0
LIBSOUP_2_28_1
LIBSOUP_2_29_3
LIBSOUP_2_29_5
LIBSOUP_2_29_6
LIBSOUP_2_29_90
LIBSOUP_2_29_91
LIBSOUP_2_2_0
LIBSOUP_2_2_100
LIBSOUP_2_2_101
LIBSOUP_2_2_102
LIBSOUP_2_2_103
LIBSOUP_2_2_5
LIBSOUP_2_2_6
LIBSOUP_2_2_6_1
LIBSOUP_2_2_90_NOT_A_REAL_RELEASE
LIBSOUP_2_2_91
LIBSOUP_2_2_92
LIBSOUP_2_2_93
LIBSOUP_2_2_94
LIBSOUP_2_2_95_1
LIBSOUP_2_2_96
LIBSOUP_2_2_97
LIBSOUP_2_2_98
LIBSOUP_2_2_99
LIBSOUP_2_30_0
LIBSOUP_2_31_6
LIBSOUP_2_31_90
LIBSOUP_2_31_92
LIBSOUP_2_32_0
LIBSOUP_2_32_1
LIBSOUP_2_32_2
LIBSOUP_2_33_4
LIBSOUP_2_33_5
LIBSOUP_2_33_6
LIBSOUP_2_33_90
LIBSOUP_2_33_92
LIBSOUP_2_34_0
LIBSOUP_2_34_1
LIBSOUP_2_35_3
LIBSOUP_2_35_4
LIBSOUP_2_35_90
LIBSOUP_2_35_92
LIBSOUP_2_36_0
LIBSOUP_2_37_1
LIBSOUP_2_37_2
LIBSOUP_2_37_3
LIBSOUP_2_37_4
LIBSOUP_2_37_5
LIBSOUP_2_37_90
LIBSOUP_2_37_91
LIBSOUP_2_37_92
LIBSOUP_2_38_0
LIBSOUP_2_38_1
LIBSOUP_2_39_1
LIBSOUP_2_39_2
LIBSOUP_2_39_3
LIBSOUP_2_39_4
LIBSOUP_2_39_4_1
LIBSOUP_2_39_5
LIBSOUP_2_39_90
LIBSOUP_2_39_91
LIBSOUP_2_39_92
LIBSOUP_2_3_0_1
LIBSOUP_2_3_2
LIBSOUP_2_3_4
LIBSOUP_2_40_0
LIBSOUP_2_40_1
LIBSOUP_2_41_1
LIBSOUP_2_41_2
LIBSOUP_2_41_3
LIBSOUP_2_41_4
LIBSOUP_2_41_5
LIBSOUP_2_41_90
LIBSOUP_2_41_91
LIBSOUP_2_41_92
LIBSOUP_2_42_0
LIBSOUP_2_42_1
LIBSOUP_2_43_1
LIBSOUP_2_43_2
LIBSOUP_2_43_4
LIBSOUP_2_43_5
LIBSOUP_2_43_90
LIBSOUP_2_43_92
LIBSOUP_2_4_0
LIBSOUP_2_4_1
SOUP_0_4
SOUP_0_4_1
SOUP_0_5
SOUP_0_6_0
SOUP_2_2_100
gnome-2-12-base
libsoup-2-0-branch-base
libsoup-hacking-branch-base
libsoup-pre214-branch-base

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-102556.json"