PT-2026-26224 · Openclaw · Openclaw

Aristore · Published 2026-03-19 · Updated 2026-03-19 · CVE-2026-28449

Mitre

CVSS v3.1

4.8

Medium

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

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.

Fix

Weakness Enumeration

CWE-294

Related Identifiers

CVE-2026-28449

Affected Products

Openclaw

References · 6

• https://github.com/openclaw/openclaw/commit/d512163d686ad6741783e7119ddb3437f493dbbc · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-28449 · Security Note
• https://github.com/openclaw/openclaw/security/advisories/GHSA-r9q5-c7qc-p26w · Note
• https://twitter.com/VulmonFeeds/status/2034519035392471284 · Twitter Post
• https://twitter.com/CVEnew/status/2034520399615029694 · Twitter Post
• https://vulncheck.com/advisories/openclaw-webhook-replay-attack-via-missing-durable-replay-suppression · Note