CVE-2026-110635
CRITICAL 9.3webp-converter before 3.0.0 contains an OS command injection vulnerability in src/webpconverter.js helpers that run libwebp binaries via execFile with shell enabled. Attackers controlling file names or option strings passed to cwebp, dwebp, gwebp, or webpmux functions can inject shell metacharacters to execute OS commands as the Node.js process.
Severe if exploited (CVSS 9.3), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
2.5%chance of exploitation in 30 days · 85th percentile
Impact if exploited
9.3CVSS 4.0 · CRITICAL
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References and research data (JSON)
All CVSS metrics
- CRITICAL 9.3 v4.0 · CNA Primary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CRITICAL 9.8 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CRITICAL 9.3 v4.0 · NVD Secondary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CRITICAL 9.8 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Patches & mitigations
- https://github.com/scionoftech/webp-converter/pull/53 CVE record · VulnCheck · Updated 2026-10-14T14:17:07.752Z
NVD · CVE-2026-110635 · Updated 2026-10-16T19:18:44.867 - https://github.com/scionoftech/webp-converter/pull/53#issuecomment-5091652605 CVE record · VulnCheck · Updated 2026-10-14T14:17:07.752Z
NVD · CVE-2026-110635 · Updated 2026-10-16T19:18:44.867 - https://github.com/scionoftech/webp-converter/commit/f1b6724bc2e89f67ab05d51a854b4b1c5a99928a CVE record · VulnCheck · Updated 2026-10-14T14:17:07.752Z
NVD · CVE-2026-110635 · Updated 2026-10-16T19:18:44.867 - https://github.com/scionoftech/webp-converter/blob/e09d963d772cae9ff6af63c268ca838ab334f861/CHANGELOG.md CVE record · VulnCheck · Updated 2026-10-14T14:17:07.752Z
NVD · CVE-2026-110635 · Updated 2026-10-16T19:18:44.867
Advisories
- https://www.vulncheck.com/advisories/webp-converter-before-3.0.0-os-command-injection-via-file-names-and-options CVE record · VulnCheck · Updated 2026-10-14T14:17:07.752Z
NVD · CVE-2026-110635 · Updated 2026-10-16T19:18:44.867 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101263 EUVD · EUVD-2026-101263
Technical & other
- https://github.com/scionoftech/webp-converter/blob/3729b65f1e904ab56b947ac3772020ce37a756c8/src/webpconverter.js#L41-L52 CVE record · VulnCheck · Updated 2026-10-14T14:17:07.752Z
NVD · CVE-2026-110635 · Updated 2026-10-16T19:18:44.867 - https://github.com/scionoftech/webp-converter CVE record · VulnCheck · Updated 2026-10-14T14:17:07.752Z
NVD · CVE-2026-110635 · Updated 2026-10-16T19:18:44.867