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BIT-PYTHON-2025-6069 HTMLParser quadratic complexity when processing malformed inputs

🗓️ 11 Aug 2025 13:59:58Reported by GoogleType 
osv
 osv🔗 osv.dev👁 13 Views

HTMLParser may have quadratic complexity with malformed inputs, risking denial-of-service attacks.

Related
Refs
ReporterTitlePublishedViews
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IBM Security Bulletins		Security Bulletin: IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
10 Mar 202612:40
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IBM Security Bulletins		Security Bulletin: IBM Virtualization Engine TS7700 is susceptible to Denial of Service.
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities that affects IBM Db2 Genius Hub
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ATTACKERKB		CVE-2025-6069
17 Jun 202513:39
–attackerkb
Tenable Nessus		Amazon Linux 2023 : python3.12, python3.12-devel, python3.12-idle (ALAS2023-2025-1056)
10 Jul 202500:00
–nessus
Tenable Nessus		Amazon Linux 2023 : python3, python3-devel, python3-idle (ALAS2023-2025-1090)
4 Aug 202500:00
–nessus
Tenable Nessus		Amazon Linux 2023 : python3.11, python3.11-devel, python3.11-idle (ALAS2023-2025-1116)
4 Aug 202500:00
–nessus
Tenable Nessus		Amazon Linux 2 : python (ALAS-2025-2911)
10 Jul 202500:00
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Tenable Nessus		Amazon Linux 2 : python3 (ALAS-2025-2923)
10 Jul 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : python3.9 (ALSA-2025:23342)
23 Dec 202500:00
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SourceLink
githubwww.github.com/python/cpython/commit/4455cbabf991e202185a25a631af206f60bbc949
githubwww.github.com/python/cpython/commit/6eb6c5dbfb528bd07d77b60fd71fd05d81d45c41
githubwww.github.com/python/cpython/commit/8d1b3dfa09135affbbf27fb8babcf3c11415df49
githubwww.github.com/python/cpython/commit/ab0893fd5c579d9cea30841680e6d35fc478afb5
githubwww.github.com/python/cpython/commit/d851f8e258c7328814943e923a7df81bca15df4b
githubwww.github.com/python/cpython/commit/f3c6f882cddc8dc30320d2e73edf019e201394fc
githubwww.github.com/python/cpython/commit/fdc9d214c01cb4588f540cfa03726bbf2a33fc15
githubwww.github.com/python/cpython/issues/135462
githubwww.github.com/python/cpython/pull/135464
mailwww.mail.python.org/archives/list/[email protected]/thread/K5PIYLR6EP3WR7ZOKKYQUWEDNQVUXOYM/
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10 Oct 2025 09:07Current
4.5Medium risk
Vulners AI Score4.5
CVSS 3.14.3
EPSS0.00473
SSVC
htmlparser vulnerability denial of service complex processing malformed inputs
13