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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.2.14 | 2026.2.14 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | clawdbot | <= 2026.1.24-3 | — | GHSA-w2cg-vxx6-5xjg |
| npm | openclaw | < 2026.2.14 | 2026.2.14 | GHSA-w2cg-vxx6-5xjg |
Advisories 1
- WID-SEC-2026-0424 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 5, 2026
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