CVE-2026-59882

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-59882
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-59882.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-59882
Aliases
Downstream
Published
2026-07-08T15:50:03.077Z
Modified
2026-07-19T03:48:40.462852971Z
Severity
  • 4.2 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
Summary
guzzlehttp/psr7: Host Confusion via Weak URI Host Validation
Details

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost() does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost() to disagree with the URI authority used for security or routing decisions. This issue is fixed in version 2.12.3.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-436"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59882.json"
}
References

Affected packages

Git / github.com/guzzle/psr7

Affected ranges

Type
GIT
Repo
https://github.com/guzzle/psr7
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7ec62dc3f44aa218487dbed81a9bf9bc647be55d
Fixed
ddd64f17d4cc1f7e5ffe6fd2c989ec7221712580
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.12.3"
        }
    ],
    "cpe": "cpe:2.3:a:guzzlephp:psr-7:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.0.0
1.1.0
1.2.0
1.2.1
1.2.2
1.2.3
1.3.0
1.3.1
1.4.0
1.4.1
1.4.2
1.5.0
1.5.1
1.5.2
1.6.0
2.*
2.0.0
2.0.0-beta1
2.0.0-rc1
2.1.0
2.10.0
2.10.1
2.11.0
2.11.1
2.12.0
2.12.1
2.12.2
2.2.0
2.2.1
2.2.2
2.3.0
2.4.0
2.4.1
2.4.2
2.4.3
2.4.4
2.5.0
2.6.0
2.6.1
2.6.2
2.6.3
2.7.0
2.7.1
2.8.0
2.8.1
2.9.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-59882.json"