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CVE-2026-28449
4.8 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): HIGH
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): LOW
- Availability impact (A): LOW
OpenClaw < 2026.2.25 - Webhook Replay Attack via Missing Durable Replay Suppression
OpenClaw versions prior to 2026.2.25 lack durable replay state for Nextcloud Talk webhook events, allowing valid signed webhook requests to be replayed without suppression. Attackers can capture and replay previously valid signed webhook requests to trigger duplicate inbound message processing and cause integrity or availability issues.
References
- GitHub Security Advisory (GHSA-r9q5-c7qc-p26w) third-party-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.2.25 - Webhook Replay Attack via Missing Durable Replay Suppression third-party-advisory
Affected products
OpenClaw
- <2026.2.25
Package maintainers
-
@chrisportela Chris Portela <chris@chrisportela.com>