Description

OpenClaw before 2026.4.8 contains improper input validation in base64 decode paths that allocate memory before enforcing decoded-size limits. Attackers can exploit multiple code paths to cause memory exhaustion or denial of service through crafted base64-encoded input.

INFO

Published Date :

2026-04-28T18:10:11.948Z

Last Modified :

2026-04-29T15:10:38.714Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-42420 vulnerability.

Vendors Products
Openclaw
  • Openclaw
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-42420.

URL Resource
https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 cve-icon cve-icon
https://github.com/openclaw/openclaw/security/advisories/GHSA-ccx3-fw7q-rr2r cve-icon cve-icon
https://www.vulncheck.com/advisories/openclaw-improper-base64-decoding-size-validation cve-icon cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
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User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact