Is CVE-2026-45375 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-45375 being exploited in the wild.

How severe is CVE-2026-45375?

Critical severity, with a CVSS score of 9, published 14 May 2026.

Which products and versions are affected?

github.com/siyuan-note/siyuan/kernel (Go) <= 0.0.0-20260421031503-96dfe0bea474, SEMVER:introduced=0, SEMVER:introduced=0,last_affected=0.0.0-20260421031503-96dfe0bea474; SiYuan < 3.7.0, <= 0.0.0-20260421031503-96dfe0bea474.

Is there a fix for CVE-2026-45375?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-45375 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-45375?

Check whether you run github.com/siyuan-note/siyuan/kernel (Go) or SiYuan at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-45375: SiYuan Bazaar XSS and Remote Code Execution via Package Metadata

Q: Is there a fix for CVE-2026-45375?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2026-45375 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-45375?

Check whether you run github.com/siyuan-note/siyuan/kernel (Go) or SiYuan at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-45375 · Severity: critical · CVSS 9 · Published 2026-05-14

SiYuan is an open-source personal knowledge management system. A security vulnerability in its community marketplace (Bazaar) allows malicious plugins or themes to execute unauthorized code on a user's computer. If a user simply views the marketplace or their list of installed plugins, a specially crafted package name or version number can trigger the attack. Because the desktop application has high-level system permissions, this can lead to a full takeover of the user's computer and data.

Technologies: github.com/siyuan-note/siyuan/kernel (Go), SiYuan. Vendors: Go, SiYuan.

Quick answers

Is CVE-2026-45375 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-45375 being exploited in the wild.
How severe is CVE-2026-45375?: Critical severity, with a CVSS score of 9, published 14 May 2026.
Which products and versions are affected?: github.com/siyuan-note/siyuan/kernel (Go) <= 0.0.0-20260421031503-96dfe0bea474, SEMVER:introduced=0, SEMVER:introduced=0,last_affected=0.0.0-20260421031503-96dfe0bea474; SiYuan < 3.7.0, <= 0.0.0-20260421031503-96dfe0bea474.
Is there a fix for CVE-2026-45375?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-45375 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-45375?: Check whether you run github.com/siyuan-note/siyuan/kernel (Go) or SiYuan at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stored Cross-Site Scripting (XSS) vulnerability exists in SiYuan's Bazaar marketplace due to improper neutralization of the 'name' and 'version' fields in package manifest files (plugin.json, theme.json, etc.). While the 'sanitizePackageDisplayStrings' function in the Go-based kernel escapes other fields, it omits 'Name' and 'Version'. These unsanitized strings are passed to the frontend and injected into the DOM using 'innerHTML'. In the desktop client, Electron is configured with 'nodeIntegration: true' and 'contextIsolation: false', allowing the XSS payload to access Node.js APIs like 'child_process'. An attacker can achieve arbitrary OS command execution by submitting a malicious package to the public marketplace or tricking a user into installing one. The vulnerability is triggered when a user opens the Marketplace UI, requiring no further interaction.

Affected products

SiYuan-Note SiYuan < 3.7.0

Identifiers

CVE-2026-45375
GHSA-27qc-m5gf-jv5r
GO-2026-5001

Timeline

2026-05-10: advisory: GitHub Security Advisory published
2026-05-14: disclosed: NVD publication date

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-27qc-m5gf-jv5r

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