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GHSA-3fvr-2jw6-crq4: Duplicate Advisory: Guzzle: Unbounded response cookies risk denial of service

mediumCVSS 5.3
Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-f283-ghqc-fg79. This link is maintained to preserve external references. Original Description guzzlehttp/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.

Details

Source
GitHub Security Advisories (INTL · database · site)
Severity
medium — CVSS 5.3
Published
2026-08-01
Last updated
2026-08-04
Exploitation
Not in CISA KEV at last sync

Original advisory: https://github.com/advisories/GHSA-3fvr-2jw6-crq4

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