Guzzle: Cookie Disclosure and Injection via IP-Address Domains

Summary

CVECVE-2026-59883
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-08 17:17:26 UTC
Updated2026-07-08 17:17:26 UTC
DescriptionGuzzle 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.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from [email protected]

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

Problem Types: CWE-346 | CWE-384 | CWE-346 CWE-346: Origin Validation Error | CWE-384 CWE-384: Session Fixation


VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED4.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Guzzle Guzzle affected < 7.12.3 Not specified

References

ReferenceSourceLinkTags
github.com/guzzle/guzzle/releases/tag/7.12.3 [email protected] github.com
github.com/guzzle/guzzle/commit/b9944c161b12d9ee9c9334cfc5b9659ecd7451f8 [email protected] github.com
github.com/guzzle/guzzle/security/advisories/GHSA-g446-98w2-8p5w [email protected] github.com
github.com/guzzle/guzzle/pull/3694 [email protected] github.com
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