GitHub Advisoryadvisory · npm

GHSA-ccx3-fw7q-rr2r OpenClaw: Multiple Code Paths Missing Base64 Pre-Allocation Size Checks

MEDIUM Published 2026-04-09 Modified 2026-05-06 Official page ↗
Aliases
CVE-2026-42420
Ecosystem
npm
Packages
openclaw
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-770
Reviewed
2026-04-09

Affected packages

• npm openclaw: < 2026.4.8 → fixed in 2026.4.8

Description

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.

Related

Alias · CVE (1)

  • CVE-2026-42420 OpenClaw before 2026.4.8 contains improper input validation in base64 decode paths that allocate memory before enforcing decoded-size… vulnerability

Weakness · CWE (1)

  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References