CVE-2026-67353
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| guzzle | guzzle | 0 < 7.15.1 | affected |
| guzzle | guzzle | 7.15.1 | unaffected |
Weaknesses
- CWE-770: Allocation of Resources Without Limits or Throttling
References
- https://github.com/guzzle/guzzle/security/advisories/GHSA-f283-ghqc-fg79
- https://www.vulncheck.com/advisories/guzzlehttp-guzzle-before-unbounded-cookie-denial-of-service
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