CVE-2026-100642
Last modified
CVE-2026-100642 is a high-severity vulnerability rated 7.6/10 on the CVSS scale. 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..
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.
Metrics
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-100642?
How severe is CVE-2026-100642?
How do I fix CVE-2026-100642?
How Strix Helps
- Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-100637SiYuan versions before v3.8.4 contain a path traversal vulne…7.6
- CVE-2026-100638SiYuan versions before v3.8.4 contain a path traversal vulne…7.6
- CVE-2026-100639SiYuan v3.8.3 fails to HTML-escape the data-subtype attribut…8.8
- CVE-2026-10064A security flaw has been discovered in TRENDnet TEW-432BRP 3…9.8
- CVE-2026-100640SiYuan before v3.8.4 contains an authorization omission in t…4.7
- CVE-2026-100641SiYuan before v3.8.4 does not HTML-escape stored flashcard b…8
- CVE-2026-100643SiYuan versions before v3.8.4 fail to properly escape four s…8
- CVE-2026-100644SiYuan before v3.8.4 contains a SQL injection vulnerability …7.5
- CVE-2026-100645SiYuan versions 3.7.0 before 3.8.4 contain a stored cross-si…8
- CVE-2026-100646SiYuan is a self-hosted personal knowledge management system…8.1
- CVE-2026-100647vLLM versions before 0.29.0 contain a denial-of-service vuln…5.3
- CVE-2026-100648vllm before 0.29.0 fails to enforce VLLM_MAX_AUDIO_CLIP_FILE…5.3
Are you affected by CVE-2026-100642?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST