Is CVE-2026-54069 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-54069 being exploited in the wild.

How severe is CVE-2026-54069?

Critical severity, with a CVSS score of 4, published 24 June 2026.

Which products and versions are affected?

github.com/siyuan-note/siyuan/kernel (Go) < 0.0.0-20260628153353-2d5d72223df4, SEMVER:introduced=0,fixed=0.0.0-20260628153353-2d5d72223df4; SiYuan < 3.7.0.

Is there a fix for CVE-2026-54069?

Yes. github.com/siyuan-note/siyuan/kernel (Go): upgrade to 0.0.0-20260628153353-2d5d72223df4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-54069 attacked?

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

Am I affected by CVE-2026-54069?

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-2026-54069: SiYuan Note unauthenticated admin API access via browser extensions

Q: Is there a fix for CVE-2026-54069?

Yes. github.com/siyuan-note/siyuan/kernel (Go): upgrade to 0.0.0-20260628153353-2d5d72223df4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-54069 attacked?

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

Q: Am I affected by CVE-2026-54069?

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-2026-54069 · Severity: critical · CVSS 4 · Published 2026-06-24

SiYuan Note, a personal knowledge management system, contains a security flaw that allows any installed browser extension to access its administrative functions without a password. This could allow a malicious or compromised browser extension to steal a user's private notes, inject malicious scripts, or change application settings. The risk is particularly high for desktop users where this protection is disabled by default.

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

Quick answers

Is CVE-2026-54069 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-54069 being exploited in the wild.
How severe is CVE-2026-54069?: Critical severity, with a CVSS score of 4, published 24 June 2026.
Which products and versions are affected?: github.com/siyuan-note/siyuan/kernel (Go) < 0.0.0-20260628153353-2d5d72223df4, SEMVER:introduced=0,fixed=0.0.0-20260628153353-2d5d72223df4; SiYuan < 3.7.0.
Is there a fix for CVE-2026-54069?: Yes. github.com/siyuan-note/siyuan/kernel (Go): upgrade to 0.0.0-20260628153353-2d5d72223df4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-54069 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-54069?: 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.

How to fix

github.com/siyuan-note/siyuan/kernel (Go): upgrade to 0.0.0-20260628153353-2d5d72223df4 or later
```
go get github.com/siyuan-note/siyuan/kernel@v0.0.0-20260628153353-2d5d72223df4
```

Technical details

An origin validation error (CWE-346) exists in the SiYuan kernel's authentication middleware. Specifically, `kernel/model/session.go` contains a check that exempts any request with a `chrome-extension://` origin prefix from authentication, automatically assigning it `RoleAdministrator`. Because desktop installations often have an empty `AccessAuthCode` by default, any Chrome/Chromium extension can make arbitrary API calls to the local kernel at `127.0.0.1:6806`. Attackers can leverage this to exfiltrate data via SQL queries, inject stored XSS into notes, or modify system configurations. A patch is available in version 0.0.0-20260628153353-2d5d72223df4.

Affected products

siyuan-note SiYuan <= v3.6.5

Identifiers

CVE-2026-54069
GHSA-hvr9-72v2-fff3
GO-2026-5961

Timeline

2026-06-24: advisory: NVD publication date
2026-07-10: disclosed: GitHub Advisory published
2026-06-28: patched: Fix commit date

References

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