CVE-2026-31899
CairoSVG vulnerable to Exponential DoS via recursive <use> element amplification
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
CairoSVG is an SVG converter based on Cairo, a 2D graphics library. Prior to Kozea/CairoSVG has exponential denial of service via recursive <use> element amplification in cairosvg/defs.py. This causes CPU exhaustion from a small input.
| CWE | CWE-674 |
| Vendor | kozea |
| Product | cairosvg |
| Published | Mar 13, 2026 |
| Last Updated | Mar 16, 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:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Kozea / CairoSVG
< 2.9.0