CVE-2026-121444

svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference Graph

Published Nov 3, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Darylldoyle
Darylldoyle svg-sanitizer
Vendors & Products Darylldoyle
Darylldoyle svg-sanitizer
Type Values Removed Values Added
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.
Title svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference Graph
First Time appeared Drupal
Drupal svg Sanitizer
Weaknesses CWE-400
CPEs cpe:2.3:a:drupal:svg_sanitizer:*:*:*:*:*:*:*:*
Vendors & Products Drupal
Drupal svg Sanitizer
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 3, 2026, 6:28 PM
Reserved
Nov 3, 2026, 12:32 PM
Status
Deferred
Published
Nov 3, 2026, 3:17 PM
Modified
Nov 3, 2026, 7:18 PM