CVE-2026-100642
SiYuan versions from v2.1.0 before v3.8.4 contain a cross-site request forgery vulnerability in the…
- Risk score
- 51/100
- CVSS
- 7.6 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 26 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- SiYuan versions from v2.1.0 before v3.8.4 contain a cross-site request forgery vulnerability in the CheckAuth lock-screen pass-through branch that grants administrator access to loopback requests without validating Origin headers. Attackers can craft malicious web pages that force victims to terminate the kernel proce…
- Affected
- See advisory
- Fix
- Upgrade the product to 3.8.4 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.6 high
- Remotely exploitable without logging in
References
Original description
SiYuan versions from v2.1.0 before v3.8.4 contain a cross-site request forgery vulnerability in the CheckAuth lock-screen pass-through branch that grants administrator access to loopback requests without validating Origin headers. Attackers can craft malicious web pages that force victims to terminate the kernel process, read workspace configuration and proxy settings, and trigger administrative actions via zero-credential cross-origin requests from the victim's browser.
Last activity 26 Sep 2026. Patch Forecast updates every hour.