CVE-2026-27488Network attack vector

Unauthenticated SSRF via unguarded cron webhook fetch

Published Feb 21, 2026 · Updated Feb 21, 2026

SSRF in OpenClaw before 2026.2.19 allows remote attackers to send cron webhook requests to private, metadata, and internal endpoints. The gateway's cron delivery path in src/gateway/server-cron.ts passes the configured webhook URL directly to fetch() instead of fetchWithSsrFGuard, omitting private-address and metadata policy checks. A reachable cron-webhook execution path and attacker-influenced target are required; exploitation makes the gateway issue attacker-selected POST requests without directly disclosing response bodies.

CVSS severity6.9
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in OpenClaw before 2026.2.19 allows remote attackers to send cron webhook requests to private, metadata, and internal endpoints. The gateway's cron delivery path in src/gateway/server-cron.ts passes the configured webhook URL directly to fetch() instead of fetchWithSsrFGuard, omitting private-address and metadata policy checks. A reachable cron-webhook execution path and attacker-influenced target are required; exploitation makes the gateway issue attacker-selected POST requests without directly disclosing response bodies.

The record

CVE
CVE-2026-27488
Published
Feb 21, 2026
Updated
Feb 21, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2026.2.19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=< 2026.2.19

Published CVSS scores

6.9GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L
7.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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