What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-05 · updated 2026-06-17
• Weakness: CWE-770

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

• OpenClaw: before 2026.2.14 — fixed in 2026.2.14

How to fix

Upgrade to a fixed version: OpenClaw 2026.2.14. Check the vendor advisory for mitigations.

References

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

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