CVE-2026-59883

Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain() applied ordinary suffix matching to domains such as 192.168.0.1, [::1], or 1, allowing cross-host cookie disclosure, cookie injection, or session fixation. This issue is fixed in version 7.12.3.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/guzzle/guzzle/commit/b9944c161b12d9ee9c9334cfc5b9659ecd7451f8	Patch
https://github.com/guzzle/guzzle/pull/3694	Issue Tracking Patch
https://github.com/guzzle/guzzle/releases/tag/7.12.3	Release Notes
https://github.com/guzzle/guzzle/security/advisories/GHSA-g446-98w2-8p5w	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:guzzlephp:guzzle:*:*:*:*:*:*:*:*

History

13 Jul 2026, 14:01

Type	Values Removed	Values Added
First Time		Guzzlephp guzzle Guzzlephp
CPE		cpe:2.3:a:guzzlephp:guzzle::::::::
References	~~() https://github.com/guzzle/guzzle/commit/b9944c161b12d9ee9c9334cfc5b9659ecd7451f8 -~~	() https://github.com/guzzle/guzzle/commit/b9944c161b12d9ee9c9334cfc5b9659ecd7451f8 - Patch
References	~~() https://github.com/guzzle/guzzle/pull/3694 -~~	() https://github.com/guzzle/guzzle/pull/3694 - Issue Tracking, Patch
References	~~() https://github.com/guzzle/guzzle/releases/tag/7.12.3 -~~	() https://github.com/guzzle/guzzle/releases/tag/7.12.3 - Release Notes
References	~~() https://github.com/guzzle/guzzle/security/advisories/GHSA-g446-98w2-8p5w -~~	() https://github.com/guzzle/guzzle/security/advisories/GHSA-g446-98w2-8p5w - Mitigation, Vendor Advisory

08 Jul 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-08 17:17

Updated : 2026-07-13 14:01

NVD link : CVE-2026-59883

Mitre link : CVE-2026-59883

CVE.ORG link : CVE-2026-59883

JSON object : View

Products Affected

guzzlephp

guzzle

CWE

CWE-346

Origin Validation Error

CWE-384

Session Fixation

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