CVE-2026-62204 json
SiYuan before v3.7.4 Plugin Overwrite via Bazaar Install
published 2026-08-22 2 mo ago modified 2026-11-05 3 d ago also EUVD-2026-64270 , GHSA-rpx2-p6hp-x5gj , GO-2026-6834
- cvss
- 6.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 0%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/siyuan-note/siyuan/kernel 0.0.0-20260808010544-26ccb40d390e
- siyuan-note siyuan 3.7.4
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.09% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.9 | 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 |
| CNA | 3.1 | 6.6 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L |
| GitHub | 3.1 | 6.6 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L |
| CNA | 4.0 | 5.9 | 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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/siyuan-note/siyuan/kernel | <0.0.0-20260808010544-26ccb40d390e |
0.0.0-20260808010544-26ccb40d390e |
Affected products
- siyuan-note siyuan
Classification
References
-
github.com
/siyuan-note/siyuan/commit/26ccb40d390eb7d9b04673629a58ab1d69cc7e53
web
-
github.com
/siyuan-note/siyuan/security/advisories/GHSA-rpx2-p6hp-x5gj
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/siyuan-before-plugin-overwrite-via-bazaar-install
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-62204
advisory
-
github.com
/siyuan-note/siyuan
package
-
github.com
/siyuan-note/siyuan/releases/tag/v3.8.0
web
Sources
- CVE List CVE-2026-62204
- GitHub Advisory GHSA-rpx2-p6hp-x5gj
- NVD CVE-2026-62204
- OSV GO-2026-6834
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.