Allocation of Resources Without Limits or Throttling Affecting guzzle package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.42% (34th percentile)

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  • Snyk IDSNYK-ECHOLATEST-GUZZLE-18507854
  • published2 Aug 2026
  • disclosed1 Aug 2026

Introduced: 1 Aug 2026

CVE-2026-67353  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest guzzle.

NVD Description

Note: Versions mentioned in the description apply only to the upstream guzzle package and not the guzzle package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1