{"id":"GHSA-3fvr-2jw6-crq4","title":"Duplicate Advisory: Guzzle: Unbounded response cookies risk denial of service","summary":"Duplicate Advisory: Guzzle: Unbounded response cookies risk denial of service","severity":"medium","cvss":5.3,"cwe":["CWE-770"],"vendor":"guzzlehttp","product":"guzzlehttp/guzzle","ecosystem":"composer","affected":["guzzlehttp/guzzle < 7.15.1"],"published":"2026-08-01","updated":"2026-08-04","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-3fvr-2jw6-crq4","references":[{"url":"https://github.com/guzzle/guzzle/security/advisories/GHSA-f283-ghqc-fg79"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67353"},{"url":"https://www.vulncheck.com/advisories/guzzlehttp-guzzle-before-unbounded-cookie-denial-of-service"},{"url":"https://github.com/advisories/GHSA-3fvr-2jw6-crq4"}],"tags":["ghsa","composer"],"ingestedAt":"2026-08-05T05:58:04.854Z","slug":"GHSA-3fvr-2jw6-crq4","body":"## Overview\n\n## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-f283-ghqc-fg79. This link is maintained to preserve external references.\n\n## Original Description\nguzzlehttp/guzzle versions before 7.15.1 contain a denial of service vulnerability in the CookieJar that accepts unlimited Set-Cookie header fields with no size restrictions. Attackers can return many large cookies from a malicious server, causing Guzzle to store excessive data in memory and generate oversized Cookie headers that fail in handlers or destination servers.\n\n## Affected packages\n\n- `guzzlehttp/guzzle < 7.15.1`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}