CVE-2026-107381
mediumsvg-sanitizer is a PHP SVG/XML sanitizer.
svg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, Resolver::processReferences() in src/ElementReference/Resolver.php builds the SVG reference graph with a case-sensitive href attribute predicate before cleanHrefAttributes() normalizes mixed-case names. An attacker can provide xlink:HrEf on nested elements so the graph omits those references, after which the sanitizer converts the attribute to canonical xlink:href and returns the live nesting structure without applying the useNestingLimit protection. A consuming application that renders the sanitized SVG can therefore be exposed to the resource exhaustion that control is designed to prevent. This issue is fixed in version 1.0.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H 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/2dff6628314de8519155b7feb218bbe1327857... security-advisories@github.com
- https://github.com/darylldoyle/svg-sanitizer/releases/tag/1.0.0 security-advisories@github.com
- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-m9xh-6747-9r6f security-advisories@github.com
- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-m9xh-6747-9r6f 134c704f-9b21-4f2e-91b3-4a467353bcc0