CVE-2026-28449

MEDIUM

OpenClaw < 2026.2.25 - Webhook Replay Attack via Missing Durable Replay Suppression

Title source: cna

Description

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 (3)

[Third Party Advisory] https://github.com/openclaw/openclaw/security/advisories/GHSA-r9q5-c7qc-p26w

[Patch] https://github.com/openclaw/openclaw/commit/d512163d686ad6741783e7119ddb3437f493dbbc

View Patch ZIP pw:eip

[Third Party Advisory] https://www.vulncheck.com/advisories/openclaw-webhook-replay-attack-via-missing-durable-replay-suppression

Scores

CVSS v3 6.5

EPSS 0.0006

EPSS Percentile 19.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Details

CWE

CWE-294

Status published

Products (3)

npm/openclaw 0 - 2026.2.25npm

OpenClaw/OpenClaw < 2026.2.25

openclaw/openclaw < 2026.2.25

Published Mar 19, 2026

Tracked Since Mar 19, 2026