Is this vulnerability remotely exploitable?

Yes. If an attacker can provide content or influence prompts that feed into the Feishu extension's URL parameters or markdown processing, they can exploit the SSRF remotely through the normal OpenClaw interfaces or integrated LLM flows.

What level of access does an attacker need?

The attacker needs the ability to control or significantly influence the inputs that determine which URLs are fetched. This can be via direct configuration or content submission, or indirectly via prompt injection affecting tool calls and markdown content.

What is the safest general fix pattern?

Centralize and harden outbound HTTP handling with strict SSRF protections: enforce allowlists, block internal address ranges by default, validate resolved IPs, and route all extension-based fetches through a controlled egress mechanism instead of allowing arbitrary direct requests.

Severity:

HIGH RISK

(8.3)

Server-Side Request Forgery (CWE-918) in OpenClaw Feishu Extension

CVE-2026-28451

Published:

Mar 5, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-918

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

Unauthorized Access to Internal Resources via SSRF

May 6, 2026

CWE-863

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Privilege Escalation via Bypassed Access Control

May 6, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Network Pivoting and Internal Service Exposure via SSRF

Severity:

HIGH RISK

(8.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Network Pivoting and Internal Service Exposure via SSRF

Severity:

HIGH RISK

(8.3)

CVSS Version:

3.1

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Server-Side Request Forgery (CWE-918) in OpenClaw Feishu Extension

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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