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  4. CVE 2026 121447 svg sanitizer before 110 xss via animatetransform
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-121447

svg-sanitizer before 1.1.0 XSS via animateTransform on SafariCVE-2026-121447

Answer in brief

CVE-2026-121447 records a Medium severity (CVSS 5.3) vulnerability in svg-sanitizer before 1.1.0 XSS via animateTransform on Safari. The current sources do not mark it as known exploited. The current feed maps darylldoyle/svg-sanitizer (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 3, 2026Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Nov 3, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps darylldoyle/svg-sanitizer (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
darylldoyle/svg-sanitizergeneric>=0 <1.1.01.1.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for darylldoyle/svg-sanitizer.
  2. 2Review the reported fix. Update darylldoyle/svg-sanitizer to 1.1.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 3, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

svg-sanitizer before 1.1.0 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization by placing javascript: URLs in the animateTransform values attribute. Attackers can upload crafted SVG files whose animateTransform targets the href attribute, executing arbitrary JavaScript when Safari users click the link.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • svg-sanitizer from 1.1.0 before 1.1.1 Denial of Service via Unclosed TagSame darylldoyle/svg-sanitizer package
  • svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference GraphSame darylldoyle/svg-sanitizer package
  • svg-sanitizer 1.0.0 before 1.1.0 ReDoS and Fail-Open via image-set CSS StrippingSame darylldoyle/svg-sanitizer package
  • svg-sanitizer 0.5.0 before 1.1.0 Incomplete url() Filtering in SVG AttributesSame darylldoyle/svg-sanitizer package
  • PostfixAdmin through 4.0.5 Stored XSS via TOTP Exception DescriptionAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Nov 3, 2026
References
2 linked sources
Open source record