CVE-2026-28449

4.8 MEDIUM
Published: March 19, 2026 Modified: March 19, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/openclaw/openclaw/commit/d512163d686ad6741783e7119ddb3437f493dbbc
Source: disclosure@vulncheck.com
Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-r9q5-c7qc-p26w
Source: disclosure@vulncheck.com
Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/openclaw-webhook-replay-attack-via-missing-durable-replay-suppression
Source: disclosure@vulncheck.com
Third Party Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
4.8 / 10.0
EPSS (Exploit Probability)
0.0%
10th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-294

Affected Vendors

openclaw

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