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Allocation of Resources Without Limits or Throttling The advisory has been revoked - it doesn't affect any version of package python3.14-urllib3  (opens in a new tab)

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EPSS
0.34% (26th percentile)

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  • Snyk IDSNYK-RHEL10-PYTHON314URLLIB3-20888449
  • published14 Oct 2026
  • disclosed29 Sept 2026
Report a new vulnerability Found a mistake?

Introduced: 29 Sep 2026

NewCVE-2026-97689  (opens in a new tab)
CWE-770  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.14-urllib3 package and not the python3.14-urllib3 package as distributed by RHEL.

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read_chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a malicious server returns Transfer-Encoding: chunked followed by a very long run of bytes without a newline. The attack mechanism is that a malicious HTTP server sends a very long unterminated chunk-size line. The impact is that unbounded memory allocation can exhaust the client process. This issue is fixed in version 2.8.0.