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GHSA-ccx3-fw7q-rr2r

OpenClaw: Multiple Code Paths Missing Base64 Pre-Allocation Size Checks

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-42420

Packages

EcosystemPackageAffectedFixed in
npm openclaw < 2026.4.8 2026.4.8

Details

As written in the advisory (Markdown source, shown as plain text).

## Impact Multiple Code Paths Missing Base64 Pre-Allocation Size Checks. Several base64 decode paths could allocate before enforcing decoded-size limits. OpenClaw is a user-controlled local assistant. This advisory is scoped to the OpenClaw trust model and does not assume a multi-tenant service boundary. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `<=v2026.4.2` - Patched versions: `2026.4.8` ## Fix The issue was fixed on `main` and is available in the patched npm version listed above. The verified fixed tree is commit `d7c3210cd6f5fdfdc1beff4c9541673e814354d5`. ## Verification The fix was re-checked against `main` before publication, including targeted regression tests for the affected security boundary. ## Credits Thanks @zsxsoft and @KeenSecurityLab for reporting.

References

External links from the advisory. They lead to third-party sites.