CVE-2026-28451
Received Received - Intake
SSRF Vulnerability in OpenClaw Feishu Extension Allows Internal Access

Publication date: 2026-03-05

Last updated on: 2026-03-11

Assigner: VulnCheck

Description
OpenClaw versions prior to 2026.2.14 contain server-side request forgery vulnerabilities in the Feishu extension that allow attackers to fetch attacker-controlled remote URLs without SSRF protections via sendMediaFeishu function and markdown image processing. Attackers can influence tool calls through direct manipulation or prompt injection to trigger requests to internal services and re-upload responses as Feishu media.
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Meta Information
Published
2026-03-05
Last Modified
2026-03-11
Generated
2026-06-16
AI Q&A
2026-03-06
EPSS Evaluated
2026-06-14
NVD
CVE-2026-28451
EUVD
EUVD-2026-9900
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.2.14 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
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Executive Summary

This vulnerability exists in OpenClaw versions prior to 2026.2.14 and involves server-side request forgery (SSRF) in the Feishu extension. Attackers can exploit the sendMediaFeishu function and markdown image processing to make the server fetch URLs controlled by the attacker without proper SSRF protections.

By manipulating tool calls directly or through prompt injection, attackers can trigger requests to internal services and then re-upload the responses as Feishu media.

Impact Analysis

This vulnerability can allow attackers to make unauthorized requests from the vulnerable server to internal services that are otherwise inaccessible externally.

Such unauthorized requests can lead to information disclosure or manipulation of internal resources by re-uploading the fetched data as Feishu media.

The CVSS scores indicate a moderate severity with potential impact on integrity but no direct impact on confidentiality or availability.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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