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CVE-2026-121445 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

darylldoyle svg-sanitizer from 1.0.0 before 1.1.0 contains a regular expression denial of service vulnerability in the image-set pattern of stripRemoteCssTokens() when removeRemoteReferences is enabled. Attackers can submit SVGs with many unclosed image-set tokens to exhaust CPU, or trigger PCRE limits causing sanitize() to throw a TypeError and leave unsanitized content.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-94x8-pw3c-6qcq	CISA-ADP	AdvisoryExploitTechnical AnalysisVendor
https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-94x8-pw3c-6qcq	[email protected]	AdvisoryExploitTechnical AnalysisVendor
https://www.vulncheck.com/advisories/svg-sanitizer-1.0.0-before-1.1.0-redos-and-fail-open-via-image-set-css-stripping	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-754	Improper Check for Unusual or Exceptional Conditions	[email protected]

Affected Products

Product	Versions
darylldoyle svg-sanitizer	>= 1.0.0, < 1.1.0 (semver)
CPE cpe:2.3:a:svg_sanitizer_project:svg_sanitizer:::::::: cpe:2.3:a:svg-sanitizer_project:svg-sanitizer:::::::: Remediation Upgrade: 1.1.0moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 3, 2026	CVE Modified	CISA-ADP
Nov 3, 2026	New CVE Received	[email protected]