Medium severity4.3NVD Advisory· Published Apr 28, 2026· Updated Apr 30, 2026
CVE-2026-42420
CVE-2026-42420
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.4.8 | 2026.4.8 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5nvdPatchWEB
- github.com/advisories/GHSA-ccx3-fw7q-rr2rghsaADVISORY
- github.com/openclaw/openclaw/security/advisories/GHSA-ccx3-fw7q-rr2rnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-42420ghsaADVISORY
- www.vulncheck.com/advisories/openclaw-improper-base64-decoding-size-validationnvdThird Party AdvisoryWEB
News mentions
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