Server-Side Request Forgery (SSRF) in OpenClaw - CVE-2026-28451
Published: May 4, 2026
Vulnerability identifier: #VU129434
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-28451
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information from internal services.
The vulnerability exists due to server-side request forgery (SSRF) in the Feishu extension when fetching attacker-controlled remote URLs through sendMediaFeishu(mediaUrl) or Feishu DocX markdown image processing. A remote attacker can supply a specially crafted URL to disclose sensitive information from internal services.
Exploitation requires the ability to influence tool calls, directly or via prompt injection, and the fetched response may be re-uploaded as Feishu media.
How to mitigate CVE-2026-28451
Install security update from vendor's website.