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CVE-2026-92985

8.8 · HIGH

SiYuan versions before 3.8.4 fail to escape bookmark labels imported from notebook files when rendering them in the dock tree.

Published Sep 17, 2026CWE-79EPSS 0.82%

Overview

CVE-2026-92985 is a high-severity vulnerability. It was published on September 17, 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 versions before 3.8.4 fail to escape bookmark labels imported from notebook files when rendering them in the dock tree. Attackers can craft malicious .sy notebook files with unescaped HTML in bookmark attributes that execute scripts in the Electron renderer with access to child_process for 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/v3.8.3/app/src/util/Tree.ts#L134GitHubgithub.com/siyuan-note/siyuan/commit/6f093ebe50afc503e2a8b056164293054f8509e7GitHubgithub.com/siyuan-note/siyuan/security/advisories/GHSA-jhfc-9mcq-8p8vRefwww.vulncheck.com/advisories/siyuan-before-3.8.4-cross-site-scripting-via-bookmark-labelsGitHubgithub.com/siyuan-note/siyuan/security/advisories/GHSA-jhfc-9mcq-8p8v

How CyberStrike helps

Frequently asked questions

What is CVE-2026-92985?

CVE-2026-92985 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-92985?

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-2026-92985?

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-2026-92985?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-92985 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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