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  4. CVE 2026 121444 svg sanitizer 0110 before 110 algorithmic
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Back to active CVEs
High · CVSS 8.7CVE-2026-121444

svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference GraphCVE-2026-121444

Answer in brief

CVE-2026-121444 records a High severity (CVSS 8.7) vulnerability in svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference Graph. 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
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. 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>=0.11.0 <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 from 0.11.0 before 1.1.0 contains an algorithmic complexity denial of service vulnerability in hasInfiniteLoop() and countUse() of the use reference-graph analysis. Attackers can upload a small layered SVG with 15 levels of fanned-out use elements, forcing exponential path enumeration that pins PHP workers for hours.

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 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
  • svg-sanitizer before 1.1.0 XSS via animateTransform on SafariSame darylldoyle/svg-sanitizer package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-400
Source
CVE List V5
Source checked
Nov 3, 2026
References
2 linked sources
Open source record