CVE-2026-117540
highsvg-sanitizer from 0.5.3 before 1.1.0 contains a denial of service vulnerability in Sanitizer::sanitize() that repeatedly rescans the whole input while strippi…
svg-sanitizer from 0.5.3 before 1.1.0 contains a denial of service vulnerability in Sanitizer::sanitize() that repeatedly rescans the whole input while stripping PHP tags. Unauthenticated attackers can upload SVGs with many overlapping PHP tag openers and closers, forcing quadratic preg_replace passes that exhaust worker CPU for minutes.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-10-27 11:17
Modified: 2026-11-02 19:18
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-11-03 07:35 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/darylldoyle/svg-sanitizer/commit/9ba9001493f5da737759303f13bd965ebdaa77... disclosure@vulncheck.com
- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-2v7c-jx29-jprp disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/svg-sanitizer-before-1.1.0-quadratic-cpu-exhaustion-d... disclosure@vulncheck.com
- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-2v7c-jx29-jprp 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:35 UTC · record ↗