MEDIUMCVSS v3.1 4.9Vulnerability
CVE-2026-123492
SiYuan before 3.8.9 contains a nil pointer dereference vulnerability in privateCacheMiddleware that allows authenticated attackers to crash the kernel by reading nonexistent MCP resources. Attackers with a valid API token can send a resources/read request in an initialized MCP session, causing a panic that terminates the kernel process and interrupts service.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-07T06:40:34.987550+00:00
- Cvss severity
- MEDIUM
- Cvss score
- 4.9
- Retrieved at
- 2026-11-07T06:41:39+00:00
- Score
- 4.9
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-123492
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- First seen by Signal
- 2026-11-06T18:25:35+00:00
- Name
- CVE-2026-123492
- Vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Published at
- 2026-11-06T15:17:18.830
- Last modified
- 2026-11-06T15:17:18.963
Related Entities (1)
HAS_WEAKNESS (1)
Explore deeper with Ninja Signal's threat intelligence graph