CVE-2026-121443
svg-sanitizer from 1.1.0 before 1.1.1 Denial of Service via Unclosed Tag
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-248 |
| Vendor | darylldoyle |
| Product | svg-sanitizer |
| Published | Nov 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
darylldoyle / svg-sanitizer
1.1.0 < 1.1.1
References
Credits
🔍 nlemoine