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OpenClaw has two SSRF via sendMediaFeishu and markdown image fetching in Feishu extension

High severity GitHub Reviewed Published Feb 16, 2026 in openclaw/openclaw • Updated Mar 11, 2026

Package

npm openclaw (npm)

Affected versions

< 2026.2.14

Patched versions

2026.2.14

Description

Summary

The Feishu extension could fetch attacker-controlled remote URLs in two paths without SSRF protections:

  • sendMediaFeishu(mediaUrl)
  • Feishu DocX markdown image URLs (write/append -> image processing)

Affected versions

  • < 2026.2.14

Patched versions

  • >= 2026.2.14

Impact

If an attacker can influence tool calls (directly or via prompt injection), they may be able to trigger requests to internal services and re-upload the response as Feishu media.

Remediation

Upgrade to OpenClaw 2026.2.14 or newer.

Notes

The fix routes Feishu remote media fetching through hardened runtime helpers that enforce SSRF policies and size limits.

References

@steipete steipete published to openclaw/openclaw Feb 16, 2026
Published to the GitHub Advisory Database Feb 18, 2026
Reviewed Feb 18, 2026
Published by the National Vulnerability Database Mar 5, 2026
Last updated Mar 11, 2026

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(13th percentile)

Weaknesses

Server-Side Request Forgery (SSRF)

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. Learn more on MITRE.

CVE ID

CVE-2026-28451

GHSA ID

GHSA-x22m-j5qq-j49m

Source code

Credits

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