Medium severity5.3NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026
CVE-2026-121443
CVE-2026-121443
Description
svg-sanitizer from 1.1.0 before 1.1.1 contains a denial of service vulnerability that allows remote attackers to crash requests by submitting SVG input ending inside an unclosed tag. Attackers can upload truncated input like a single '<' to trigger an uncaught ValueError from strpos() in hasElementWithTooManyAttributes() or hasInternalDtdSubset() on PHP 8, failing the request.
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Affected products
1- Range: 1.1.0 <= x < 1.1.1
Patches
Vulnerability mechanics
References
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