MEDIUMVulnerability
CVE-2026-67353
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.
Properties
- severity
- MEDIUM
- score
- 5.3
- epss_score
- 0.00247
- cve_id
- CVE-2026-67353
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- published_at
- 2026-08-01T13:17:06.000
- last_modified
- 2026-09-08T20:35:01.260
- epss_percentile
- 0.15913
Related Entities (3)
ENRICHED_BY (1)
→[Source]FIRST EPSS
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Allocation of Resources Without Limits or Throttling
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