CVE-2026-41351

OpenClaw prior to version 2026.3.31 is affected by a replay-detection bypass in webhook signature handling. The vulnerability occurs because Base64 and Base64URL encoded signatures are treated as distinct requests, allowing an attacker to re-encode Telnyx webhook signatures to bypass replay prote...

CVE-2026-41351 OpenClaw < 2026.3.31 - Webhook Replay Detection Bypass via Base64 Signature Re-encoding

OpenClaw before 2026.3.31 contains a replay detection bypass vulnerability in webhook signature handling that treats Base64 and Base64URL encoded signatures as distinct requests. Attackers can re-encode Telnyx webhook signatures to bypass replay detection while maintaining valid signature...

Improper Check for Unusual or Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions due to missing timestamp validation in the Zoom webhook handler. An attacker can corrupt meeting state by replaying webhook requests. Remediation Upgrade...

PT-2026-28420

Name of the Vulnerable Software and Affected Versions Mattermost Plugins versions 10.11.11.0 and 11.4 Description Mattermost plugins do not properly validate timestamps in webhook requests. This allows an attacker to repeatedly send webhook requests, potentially corrupting the state of Zoom...

CVE-2026-32012

OpenClaw prior to 2026.2.25 is affected by CVE-2026-32012 due to a missing durable replay state for Nextcloud Talk webhook events. This allows an attacker to capture and replay valid signed webhook requests, potentially triggering duplicate inbound processing and causing integrity or availability...

CVE-2026-32053

CVE-2026-32053 affects OpenClaw versions prior to 2026.2.23. The root cause is a flaw in Twilio webhook event deduplication, where normalized event IDs are randomized per parse, allowing replayed webhook events to bypass dedupe checks. This can cause duplicate or stale call-state transitions, lea...

GHSA-866C-WWM5-4RJ7 Duplicate Advisory: OpenClaw's Nextcloud Talk webhook replay could trigger duplicate inbound processing

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-r9q5-c7qc-p26w. This link is maintained to preserve external references. Original Description OpenClaw versions prior to 2026.2.25 lack durable replay state for Nextcloud Talk webhook events, allowing valid sign...

Duplicate Advisory: OpenClaw's Nextcloud Talk webhook replay could trigger duplicate inbound processing

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-r9q5-c7qc-p26w. This link is maintained to preserve external references. Original Description OpenClaw versions prior to 2026.2.25 lack durable replay state for Nextcloud Talk webhook events, allowing valid sign...

CVE-2026-28449

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 an...

CVE-2026-28449 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 an...

CVE-2026-28449

OpenClaw versions prior to 2026.2.25 are affected by a missing durable replay suppression for Nextcloud Talk webhook events. This allows valid signed webhook requests to be replayed, triggering duplicate inbound message processing and potentially impacting integrity and availability. The vulnerab...

CVE-2026-28449 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 an...

GHSA-R9Q5-C7QC-P26W OpenClaw's Nextcloud Talk webhook replay could trigger duplicate inbound processing

Summary 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. Details OpenClaw's Nextcloud Talk webhook path verified HMACsecret, random + body but...

Replay Attack

Overview openclaw is a 🦞 OpenClaw — Personal AI Assistant Affected versions of this package are vulnerable to Replay Attack via the webhook replay handling. An attacker can cause duplicate inbound actions to be processed by replaying previously valid signed webhook requests after the replay windo...

OpenClaw's Nextcloud Talk webhook replay could trigger duplicate inbound processing

Summary 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. Details OpenClaw's Nextcloud Talk webhook path verified HMACsecret, random + body but...

GHSA-VQX8-9XXW-F2M7 OpenClaw's voice-call Twilio webhook replay could bypass manager dedupe because normalized event IDs were randomized per parse

Impact Twilio webhook replay events could bypass voice-call manager dedupe because normalized event IDs were randomized per parse. A replayed event could be treated as new and trigger duplicate or stale call-state transitions. Affected Packages / Versions - Package: openclaw npm - Vulnerable...