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CVE-2026-93922

8.8 · HIGH

SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer.

Published Sep 19, 2026CWE-79EPSS 0.82%

Overview

CVE-2026-93922 is a high-severity vulnerability. It was published on September 19, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/siyuan-note/siyuanGitHubgithub.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72GitHubgithub.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.go#L2446-L2454GitHubgithub.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqmRefwww.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-notebook-namesGitHubgithub.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm

How CyberStrike helps

Frequently asked questions

What is CVE-2026-93922?

CVE-2026-93922 is a high-severity vulnerability. It was published on September 19, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-93922?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-93922?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-93922?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-93922 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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