CVE-2026-29609: OpenClaw affected by denial of service via unbounded URL-backed media fetch

February 18, 2026 (updated March 5, 2026)

URL-backed media fetch handling allocated the entire response payload in memory (arrayBuffer) before enforcing maxBytes, allowing oversized responses to cause memory exhaustion.

References

github.com/advisories/GHSA-j27p-hq53-9wgc
github.com/openclaw/openclaw
github.com/openclaw/openclaw/commit/00a08908892d1743d1fc52e5cbd9499dd5da2fe0
github.com/openclaw/openclaw/security/advisories/GHSA-j27p-hq53-9wgc
nvd.nist.gov/vuln/detail/CVE-2026-29609

Code Behaviors & Features

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