CVE-2026-88366
A public proof of concept exists; no exploitation attested.
- Published2026-09-24
- WeaknessCWE-681
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2026-09-2416:17CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 15:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-88366?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-88366?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-88366 yet.
Fix
No fix published by the sources we read yet. NVD record
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2026-09-24
- Last Modified
- 2026-10-06
- NVD status
- Deferred
Frequently asked questions
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Same product first, then the same vendor advisory and the same publication week.