Vulnerability · Published Mar 5, 2026 · Assigned by VulnCheck
CVE-2026-29612OpenClaw < 2026.2.14 - Denial of Service via Large Base64 Media File Decoding
Medium 5.5
In plain English
A medium-severity resource allocation without limits in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.3%top 75.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenClaw versions prior to 2026.2.14 decode base64-backed media inputs into buffers before enforcing decoded-size budget limits, allowing attackers to trigger large memory allocations. Remote attackers can supply oversized base64 payloads to cause memory pressure and denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | clawdbot | no fix listed | GHSA-w2cg-vxx6-5xjg |
| npm | openclaw | 2026.2.14 | GHSA-w2cg-vxx6-5xjg |
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-w2cg-vxx6-5xjg) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.2.14 - Denial of Service via Large Base64 Media File Decoding third-party-advisory