CVE-2026-28449: OpenClaw's Nextcloud Talk webhook replay could trigger duplicate inbound processing
(updated )
When Nextcloud Talk webhook signing was valid, replayed requests could be accepted without durable replay suppression, allowing duplicate inbound processing after replay-window expiry or process restart.
References
- github.com/advisories/GHSA-r9q5-c7qc-p26w
- github.com/openclaw/openclaw
- github.com/openclaw/openclaw/commit/d512163d686ad6741783e7119ddb3437f493dbbc
- github.com/openclaw/openclaw/security/advisories/GHSA-r9q5-c7qc-p26w
- nvd.nist.gov/vuln/detail/CVE-2026-28449
- www.vulncheck.com/advisories/openclaw-webhook-replay-attack-via-missing-durable-replay-suppression
Code Behaviors & Features
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