CVE-2026-101883: SSRF (CVSS 5.4)

Description

OpenClaw Windows Node through 2026.9.4 contains a server-side request forgery vulnerability in the canvas.present capability that bypasses URL risk evaluation enforced by canvas.navigate. Attackers with gateway or agent access can issue canvas.present to make the node's WebView send requests to localhost, private networks, or tailnet services from the user's machine.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

References

Other References

https://github.com/openclaw/openclaw-windows-node/blob/v0.6.12/src/OpenClaw.Tray.WinUI/Windows/CanvasWindow.xaml.cs#L77-L109 https://github.com/openclaw/openclaw-windows-node/blob/v2026.9.4/src/OpenClaw.Tray.WinUI/Services/NodeService.cs#L1244-L1270 https://github.com/openclaw/openclaw-windows-node/commit/16528aadaa45d7bc6718b07ccf8b01f3eb033ad1 https://github.com/openclaw/openclaw-windows-node/security/advisories/GHSA-7vch-pmw9-3g4q https://www.vulncheck.com/advisories/openclaw-windows-node-through-2026.9.4-ssrf-via-canvas-present https://github.com/openclaw/openclaw-windows-node/security/advisories/GHSA-7vch-pmw9-3g4q

Frequently Asked Questions

What is CVE-2026-101883? +

OpenClaw Windows Node through 2026.9.4 contains a server-side request forgery vulnerability in the canvas.present capability that bypasses URL risk evaluation enforced by canvas.navigate. Attackers with gateway or agent access can issue canvas.present to make the node's WebView send requests to localhost, private networks, or tailnet services from the user's machine. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-101883? +

CVE-2026-101883 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0021, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-101883? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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