CVE-2026-35629Network attack vector

SSRF via unguarded channel extension fetches

Published Apr 9, 2026 · Updated Apr 9, 2026

Server-side request forgery in OpenClaw before 2026.3.25 allows remote authenticated users to access internal resources via channel endpoints. BlueBubbles, Mattermost, Nextcloud Talk, and thread-ownership extension clients pass configured base URLs to raw fetch() calls without DNS pinning or network-policy enforcement. Low-privileged network access and a configured affected channel are required; DNS rebinding redirects outbound requests to blocked internal destinations.

CVSS severity7.4
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in OpenClaw before 2026.3.25 allows remote authenticated users to access internal resources via channel endpoints. BlueBubbles, Mattermost, Nextcloud Talk, and thread-ownership extension clients pass configured base URLs to raw fetch() calls without DNS pinning or network-policy enforcement. Low-privileged network access and a configured affected channel are required; DNS rebinding redirects outbound requests to blocked internal destinations.

The record

CVE
CVE-2026-35629
Published
Apr 9, 2026
Updated
Apr 9, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 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=0 <2026.3.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.3.25

Published CVSS scores

7.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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