CVE-2026-62204

Published Aug 22, 2026

Last updated 2 days ago

CVSS medium 5.9

Overview

Description: SiYuan versions before v3.7.4 fail to validate that packageName matches the downloaded package content in bazaar install endpoints. Attackers with same-origin access can overwrite existing trusted plugins by supplying mismatched packageName and repoURL parameters, achieving persistence across application restarts.
Source: disclosure@vulncheck.com
NVD status: Received

Risk scores

CVSS 4.0

Type: Secondary
Base score: 5.9
Impact score: -
Exploitability score: -
Vector string: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity: MEDIUM

CVSS 3.1

Type: Primary
Base score: 6.6
Impact score: 5.3
Exploitability score: 0.8
Vector string: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L
Severity: MEDIUM

Weaknesses

disclosure@vulncheck.com: CWE-345

Hype score: Not currently trending

References

Sources include official advisories and independent security research.