CVE-2026-28449

Published: Mar 19, 2026 Last Modified: Mar 19, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 4,8
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: low

Description

AI Translation Available

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.

294

Authentication Bypass by Capture-replay

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
https://github.com/openclaw/openclaw/commit/d512163d686ad67…
https://github.com/openclaw/openclaw/commit/d512163d686ad6741783e7119ddb3437f49…
https://github.com/openclaw/openclaw/security/advisories/GH…
https://github.com/openclaw/openclaw/security/advisories/GHSA-r9q5-c7qc-p26w
https://www.vulncheck.com/advisories/openclaw-webhook-repla…
https://www.vulncheck.com/advisories/openclaw-webhook-replay-attack-via-missing…