CVE-2026-43573Network attack vector

Authenticated target access via unchecked browser navigation

Published May 5, 2026 · Updated May 5, 2026

SSRF in OpenClaw before 2026.4.10 allows remote authenticated users to navigate existing browser sessions to unauthorized targets. The existing-session action handler lets click, type, keypress, and evaluate operations trigger delayed navigation without applying post-action URL policy checks. A valid low-privilege session and an existing browser session are required; successful exploitation exposes responses from otherwise blocked network targets.

CVSS severity4.9
Medium
EPSS probability0.25%
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 2026.4.10 allows remote authenticated users to navigate existing browser sessions to unauthorized targets. The existing-session action handler lets click, type, keypress, and evaluate operations trigger delayed navigation without applying post-action URL policy checks. A valid low-privilege session and an existing browser session are required; successful exploitation exposes responses from otherwise blocked network targets.

The record

CVE
CVE-2026-43573
Published
May 5, 2026
Updated
May 5, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-862, CWE-918, T1090.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 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 <2026.4.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.4.10

Published CVSS scores

4.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
7.7VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

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-862Missing Authorization
CWE-918Server-Side Request Forgery (SSRF)
T1090.001Internal Proxy

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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