Description
A mutation XSS affects users calling bleach.clean with all of: svg or math in the allowed tags p or br in allowed tags style, title, noscript, script, textarea, noframes, iframe, or xmp in allowed tags the keyword argument strip_comments=False Note: none of the above tags are in the default allowed tags and strip_comments defaults to True.
Published: 2023-02-16
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2620-1 python-bleach security update
Debian DSA Debian DSA DSA-4892-1 python-bleach security update
EUVD EUVD EUVD-2021-0036 Cross-site scripting in Bleach
Github GHSA Github GHSA GHSA-vv2x-vrpj-qqpq Cross-site scripting in Bleach
Ubuntu USN Ubuntu USN USN-8077-1 Bleach vulnerabilities
History

Wed, 19 Mar 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Mozilla Bleach
Redhat Ansible Automation Platform
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2025-03-19T15:18:23.189Z

Reserved: 2021-01-13T00:00:00.000Z

Link: CVE-2021-23980

cve-icon Vulnrichment

Updated: 2024-08-03T19:14:09.990Z

cve-icon NVD

Status : Modified

Published: 2023-02-16T22:15:10.713

Modified: 2025-03-19T16:15:15.190

Link: CVE-2021-23980

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-02-02T00:00:00Z

Links: CVE-2021-23980 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses