RCE in Scionoftech Webp-Converter
CVE-2026-110635
webp-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.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/scionoftech/webp-converter/pull/53 (issue-tracking, patch)
- github.com/scionoftech/webp-converter/pull/53 (issue-tracking, vendor-advisory, patch)
- github.com/scionoftech/webp-converter/commit/f1b6724bc2e89f67ab05d51a854b4b1c5a… (patch)
- github.com/scionoftech/webp-converter/blob/e09d963d772cae9ff6af63c268ca838ab334… (release-notes)
- github.com/scionoftech/webp-converter/blob/3729b65f1e904ab56b947ac3772020ce37a7… (technical-description)
- github.com/scionoftech/webp-converter (product)
- www.vulncheck.com/advisories/webp-converter-before-3.0.0-os-command-injection-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110635?
- CVE-2026-110635 is a critical-severity vulnerability in Scionoftech Webp-Converter, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-14.
- How severe is CVE-2026-110635?
- Critical severity. CVSS v3 base score is 9.8 out of 10.