cve.bz

CVE-2026-59883

6.1 mediumEPSS 0.2%

Medium (6.1) in guzzlephp guzzle. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in guzzlehttp/guzzle 7.12.3.

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.

Severity

CVSS 3.1

6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)
CWEs
CWE-346, CWE-384
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-g446-98w2-8p5wPackagistguzzlehttp/guzzle<7.12.37.12.3

References

Check your stackJSON