svg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, Resolver::processReferences() in src/ElementReference/Resolver.php builds the SVG <use> reference graph with a case-sensitive href attribute predicate before cleanHrefAttributes() normalizes mixed-case names. An attacker can provide xlink:HrEf on nested <use> 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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 2
- StatusReceived → Awaiting AnalysisNVD modified 2026-10-16 16:00
- First seenCVSS 6.5NVD modified 2026-10-14 15:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 4
- https://github.com/darylldoyle/svg-sanitizer/commit/2dff6628314de8519155b7feb218bbe132785757
- https://github.com/darylldoyle/svg-sanitizer/releases/tag/1.0.0
- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-m9xh-6747-9r6f
- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-m9xh-6747-9r6f