CVE-2026-28449

MEDIUM

6.5

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/19/2026

Last Modified3/25/2026

Sourcenvd

Honeypot Sightings0

Affected Products

openclaw:openclaw

Weaknesses (CWE)

CWE-294

References

https://github.com/openclaw/openclaw/commit/d512163d686ad6741783e7119ddb3437f493dbbc(disclosure@vulncheck.com)

https://github.com/openclaw/openclaw/security/advisories/GHSA-r9q5-c7qc-p26w(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/openclaw-webhook-replay-attack-via-missing-durable-replay-suppression(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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