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.
History

Thu, 19 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 19 Mar 2026 01:30:00 +0000

Type Values Removed Values Added
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.
Title OpenClaw < 2026.2.25 - Webhook Replay Attack via Missing Durable Replay Suppression
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-294
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-03-19T01:00:45.387Z

Updated: 2026-03-19T17:05:08.184Z

Reserved: 2026-02-27T19:16:50.224Z

Link: CVE-2026-28449

cve-icon Vulnrichment

Updated: 2026-03-19T17:05:04.089Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-19T02:16:02.390

Modified: 2026-03-19T19:19:44.950

Link: CVE-2026-28449

cve-icon Redhat

No data.