CVE-2025-6069

MEDIUM EPSS 36.7%
Published Jun 17, 20251y ago · Modified Jun 17, 20262w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Jun 17, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
36.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1333

References 10

  • github.com https://github.com/python/cpython/commit/4455cbabf991e202185a25a631af206f60bbc949
  • github.com https://github.com/python/cpython/commit/6eb6c5dbfb528bd07d77b60fd71fd05d81d45c41
  • github.com https://github.com/python/cpython/commit/8d1b3dfa09135affbbf27fb8babcf3c11415df49
  • github.com https://github.com/python/cpython/commit/ab0893fd5c579d9cea30841680e6d35fc478afb5
  • github.com https://github.com/python/cpython/commit/d851f8e258c7328814943e923a7df81bca15df4b
  • github.com https://github.com/python/cpython/commit/f3c6f882cddc8dc30320d2e73edf019e201394fc
  • github.com https://github.com/python/cpython/commit/fdc9d214c01cb4588f540cfa03726bbf2a33fc15
  • github.com https://github.com/python/cpython/issues/135462
  • github.com https://github.com/python/cpython/pull/135464
  • mail.python.org https://mail.python.org/archives/list/security-announce@python.org/thread/K5PIYLR6EP3WR7ZOKKYQUWEDNQVUXOYM/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.