Vulnerability · Published Sep 24, 2026 · Assigned by mitre
CVE-2026-88366
High 7.5
In plain English
A high-severity security flaw in the nanosvg package (Ubuntu). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Official description
NanoSVG commit 239e102ec contains an incorrect numeric conversion vulnerability in nsvg__pathArcTo() when parsing SVG arc commands. A specially crafted SVG document containing extreme arc radius values can cause intermediate arc calculations to produce a NaN delta angle. The function subsequently converts this NaN value to int without validating that it is finite and representable, resulting in undefined behavior and process termination, leading to denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:24.04:LTS | nanosvg | no fix listed | UBUNTU-CVE-2026-88366 |
| Ubuntu:26.04:LTS | nanosvg | no fix listed | UBUNTU-CVE-2026-88366 |
| Ubuntu:26.10 | nanosvg | no fix listed | UBUNTU-CVE-2026-88366 |
Affected products (as reported)
Weakness: CWE-681 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H