CVE-2026-42420
medium
CVSS v3
6.5
CVSS v2
—
VIR risk
6.5
Description
OpenClaw: Multiple Code Paths Missing Base64 Pre-Allocation Size Checks
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: disclosure@vulncheck.com — https://github.com/openclaw/openclaw/security/advisories/GHSA-ccx3-fw7q-rr2r
Vendor advisory: disclosure@vulncheck.com — https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| openclaw | openclaw | {"endExcluding":"2026.4.8"} | 2026.4.8 |
References
- https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5
- https://github.com/openclaw/openclaw/security/advisories/GHSA-ccx3-fw7q-rr2r
- https://www.vulncheck.com/advisories/openclaw-improper-base64-decoding-size-validation
- https://nvd.nist.gov/vuln/detail/CVE-2026-42420
- https://github.com/openclaw/openclaw
- https://github.com/advisories/GHSA-ccx3-fw7q-rr2r
CWEs
CWE-770
Verify integrity in audit chain (admin only). AS-IS.