CVE-2025-6069

Published Jun 17, 2025

Last updated 10 days ago

CVSS medium 4.3

Overview

Description
The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.
Source
cna@python.org
NVD status
Awaiting Analysis

Risk scores

CVSS 3.1

Type
Secondary
Base score
4.3
Impact score
1.4
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Severity
MEDIUM

Weaknesses

cna@python.org
CWE-1333

Social media

Hype score
Not currently trending

  1. CVE-2025-6069 The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service. https://t.co/pJhXBzjiZC

    @CVEnew

    17 Jun 2025

    133 Impressions

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    0 Replies

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References

Sources include official advisories and independent security research.