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CVE-2025-6069

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CVE-2025-6069

Published: Jun 17, 2025

Modified: Apr 21, 2026

PUBLISHED

CVSS v3.1

4.3

MEDIUM

Description

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

VendorProductVersions

Python Software Foundation

CPython

affected
0 - < 3.10.19
affected
3.11.0 - < 3.11.14
affected
3.12.0 - < 3.12.12
affected
3.13.0 - < 3.13.6
affected
3.14.0a1 - < 3.14.0b3

Weaknesses (CWE)

CWE-1333

CVSS v3.1 Details

CVSS v3.1 Vector

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

References

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