{"schema_version":"1.9.0","id":"CVE-2025-6069","published":"2025-06-17T13:39:46.058Z","modified":"2026-08-12T03:51:14.559883396Z","aliases":["BIT-libpython-2025-6069","BIT-python-2025-6069","BIT-python-min-2025-6069","PSF-2025-10"],"related":["ALSA-2025:23342","ALSA-2025:23530","CGA-pf6p-6fjc-h933","SUSE-SU-2025:02232-1","SUSE-SU-2025:02297-1","SUSE-SU-2025:02358-1","SUSE-SU-2025:02359-1","SUSE-SU-2025:02427-1","SUSE-SU-2025:02460-1","SUSE-SU-2025:02523-1","SUSE-SU-2025:02597-1","SUSE-SU-2025:02717-1","SUSE-SU-2025:02767-1","SUSE-SU-2025:02778-1","SUSE-SU-2025:02802-1","SUSE-SU-2025:20492-1","SUSE-SU-2025:20539-1","SUSE-SU-2025:3706-1","SUSE-SU-2026:20125-1","SUSE-SU-2026:20154-1","openSUSE-SU-2025:15285-1","openSUSE-SU-2025:15289-1","openSUSE-SU-2025:15290-1","openSUSE-SU-2025:15365-1","openSUSE-SU-2025:15366-1","openSUSE-SU-2025:15367-1","openSUSE-SU-2025:15713-1","openSUSE-SU-2026:20081-1"],"summary":"HTMLParser quadratic complexity when processing malformed inputs","details":"The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"introduced":"b494f5935c92951e75597bfe1c8b1f3112fec270"},{"introduced":"deaf509e8fc6e0363bd6f26d52ad42f976ec42f2"},{"introduced":"0fb18b02c8ad56299d6a2910be0bab8ad601ef24"},{"introduced":"60403a5409ff2c3f3b07dd2ca91a7a3e096839c7"},{"introduced":"b092705907c758d4f9742028652c9802f9f03dd3"},{"fixed":"91bdb00dfed8634de52e2f64cba7545deb20f74c"},{"fixed":"f08d3c437bc5f41973ddd11f4cfc3d9fe04010f7"},{"fixed":"cd1c3a6342869b7346c1b5c27b8de9c6ef9c4e69"},{"fixed":"4a5632fbf9bf59477c540e3f53fa7cdbeea3e3f5"},{"fixed":"4e665351082c50018fb31d80db25b4693057393e"},{"fixed":"26d485d12255a10a8e965b561e7d8a70a732ec69"},{"fixed":"4455cbabf991e202185a25a631af206f60bbc949"},{"fixed":"6eb6c5dbfb528bd07d77b60fd71fd05d81d45c41"},{"fixed":"8d1b3dfa09135affbbf27fb8babcf3c11415df49"},{"fixed":"ab0893fd5c579d9cea30841680e6d35fc478afb5"},{"fixed":"d851f8e258c7328814943e923a7df81bca15df4b"},{"fixed":"f3c6f882cddc8dc30320d2e73edf019e201394fc"},{"fixed":"fdc9d214c01cb4588f540cfa03726bbf2a33fc15"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"3.9.24"},{"introduced":"3.10.0"},{"fixed":"3.10.19"},{"introduced":"3.11.0"},{"fixed":"3.11.14"},{"introduced":"3.12.0"},{"fixed":"3.12.12"},{"introduced":"3.13.0"},{"fixed":"3.13.6"},{"introduced":"3.14.0a1"},{"fixed":"3.14.0b3"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v3.13.5","v3.13.4","v3.11.13","v3.9.23","v3.10.18","v3.12.11","v3.14.0b2","v3.14.0b1","v3.9.22","v3.13.3","v3.11.12","v3.12.10","v3.10.17","v3.13.2","v3.12.9","v3.13.1","v3.12.8","v3.10.16","v3.11.11","v3.9.21","v3.13.0","v3.12.7","v3.11.10","v3.10.15","v3.12.6","v3.9.20","v3.12.5","v3.12.4","v3.12.3","v3.11.9","v3.10.14","v3.9.19","v3.12.2","v3.11.8","v3.12.1","v3.11.7","v3.11.6","v3.12.0","v3.11.5","v3.9.18","v3.10.13","v3.11.4","v3.10.12","v3.9.17","v3.10.11","v3.11.3","v3.10.10","v3.11.2","v3.10.9","v3.11.1","v3.9.16","v3.11.0rc2","v3.10.8","v3.9.15","v3.9.14","v3.10.7","v3.11.0rc1","v3.10.6","v3.11.0b5","v3.11.0b4","v3.10.5","v3.11.0b3","v3.11.0b2","v3.9.13","v3.11.0b1","v3.11.0a7","v3.10.4","v3.9.12","v3.9.11","v3.10.3","v3.11.0a6","v3.11.0a5","v3.11.0a4","v3.10.2","v3.11.0a3","v3.10.1","v3.9.9","v3.9.8","v3.10.0rc2","v3.9.7","v3.10.0rc1","v3.10.0b4","v3.9.6","v3.10.0b3","v3.10.0b2","v3.10.0b1","v3.9.5","v3.10.0a7","v3.9.2","v3.9.2rc1","v3.10.0a1","v3.9.0b5","v3.9.0b3","v3.9.0b1","v3.9.0a2","v3.7.0a2","v3.6.0b1","v3.6.0a3","v3.5.0b1","v3.5.0a4","v3.5.0a3","v3.5.0a2","v3.5.0a1","v3.4.0b3","v3.4.0b2","v3.4.0b1","v3.4.0a4","v3.4.0a3","v3.4.0a2","v3.4.0a1","v3.3.0rc3","v3.3.0rc2","v3.3.0rc1","v3.3.0b2","v3.3.0b1","v3.3.0a4","v3.3.0a3","v3.3.0a2","v3.2rc3","v3.2rc2","v3.2rc1","v3.2b2","v3.2b1","v3.2a4","v3.2a3","v3.2a2","v3.2a1","v3.1","v3.1rc2","v3.1rc1","v3.1b1","v3.1a2","v3.1a1","v3.0rc3","v3.0rc2","v3.0rc1","v3.0b3","v3.0b2","v3.0b1","v3.0a5","v3.0a4","v3.0a3","v3.0a2","v3.0a1","v2.4","v2.4c1","v2.4b2","v2.4b1","v2.4a3","v2.4a2","v2.4a1","v2.3c2","v2.3c1","v2.2a3","v2.1","v2.1c2","v2.1c1","v2.1b2","v2.1b1","v2.1a2","v2.1a1","v2.0","v2.0c1","v2.0b2","v2.0b1","v1.6a2","v1.6a1","v1.5.2","v1.5.2c1","v1.5.2b2","v1.5.2b1","v1.5.2a2","v1.5.2a1","v1.5.1","v1.5","v1.5b2","v1.5b1","v1.5a4","v1.5a3","v1.5a2","v1.5a1","v1.4","v1.4b3","v1.4b2","v1.4b1","v1.3","v1.3b1","v1.2","v1.2b4","v1.2b3","v1.2b2","v1.2b1","v1.1.1","v1.1","v1.0.2","v1.0.1","v0.9.9","v0.9.8"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6069.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6069.json"},{"type":"ADVISORY","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/K5PIYLR6EP3WR7ZOKKYQUWEDNQVUXOYM/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6069"},{"type":"REPORT","url":"https://github.com/python/cpython/issues/135462"},{"type":"FIX","url":"https://github.com/python/cpython/commit/4455cbabf991e202185a25a631af206f60bbc949"},{"type":"FIX","url":"https://github.com/python/cpython/commit/6eb6c5dbfb528bd07d77b60fd71fd05d81d45c41"},{"type":"FIX","url":"https://github.com/python/cpython/commit/8d1b3dfa09135affbbf27fb8babcf3c11415df49"},{"type":"FIX","url":"https://github.com/python/cpython/commit/ab0893fd5c579d9cea30841680e6d35fc478afb5"},{"type":"FIX","url":"https://github.com/python/cpython/commit/d851f8e258c7328814943e923a7df81bca15df4b"},{"type":"FIX","url":"https://github.com/python/cpython/commit/f3c6f882cddc8dc30320d2e73edf019e201394fc"},{"type":"FIX","url":"https://github.com/python/cpython/commit/fdc9d214c01cb4588f540cfa03726bbf2a33fc15"},{"type":"FIX","url":"https://github.com/python/cpython/pull/135464"},{"type":"PACKAGE","url":"https://github.com/python/cpython"}],"database_specific":{"cna_assigner":"PSF","cwe_ids":["CWE-1333"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6069.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}