VULNERABILITY INTELLIGENCE

CVE-2026-59883

CVSS score4.7 MEDIUM
EPSS probability0.17%
CISA KEVNot currently listed
Published2026-07-08
Last modified2026-07-13
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-346

Primary references