CVE-2026-59882

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

4.2 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N                                    

Vulnerability Description

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.

Vulnerability Details

Published Date

July 08, 2026

Last Modified

July 08, 2026

CWE ID

CWE-436

Source

NVD

Vendor

guzzle

Product

psr7

External References

https://github.com/guzzle/psr7/commit/ddd64f17d4cc1f7e5ffe6fd2c989ec7221712580
https://github.com/guzzle/psr7/pull/811
https://github.com/guzzle/psr7/releases/tag/2.12.3
https://github.com/guzzle/psr7/security/advisories/GHSA-c2w2-prh8-qm98

CVE-2026-59882

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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