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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 4.7
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS probability
- 0.17%
- CWE
- CWE-346, CWE-384
- Published
- 2026-07-08
- Last modified
- 2026-07-09
Affected products
- guzzle guzzle
Weakness type
Related vulnerabilities
- CVE-2026-87563 — Origin validation error in Paint in Google Chrome prior to 153.0.8010.36 allowed a remote attacker...
- CVE-2026-58649 — .NET Information Disclosure Vulnerability
- CVE-2026-69559 — Microsoft Teams for Android Information Disclosure Vulnerability
- CVE-2026-69680 — Windows DNS Spoofing Vulnerability
- CVE-2026-75156 — Apache Airflow FAB provider: FAB Azure AD OAuth: id_token issuer/audience not validated — cross-tenant authentication bypass
- CVE-2026-85152 — undici vulnerable to cross-origin cache poisoning via missing origin isolation in interceptors
- CVE-2026-84482 — WWBN AVideo Cross-Site Request Forgery via get_domain() validation
- CVE-2026-82811 — Toggl OÜ Toggl Track Extension postMessage origin validation