CVE-2026-50551 json
SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content
published 4mo ago modified 17d ago also EUVD-2026-39128 , GHSA-56mp-4f3v-fgj2 , GO-2026-5967
- cvss
- 9.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan contains a stored cross-site scripting (XSS) vulnerability in the Attribute View (database) asset cell renderer that escalates to remote code execution (RCE) in the Electron desktop client. This vulnerability is fixed in 3.7.0.
Patch / fix
- go github.com/siyuan-note/siyuan/kernel 0.0.0-20260628153353-2d5d72223df4
- b3log siyuan 3.7.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
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Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 4mo ago
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- github.com https://github.com/siyuan-note/siyuan/security/advisories/GHSA-56mp-4f3v-fgj2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| GitHub | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/siyuan-note/siyuan/kernel | <0.0.0-20260628153353-2d5d72223df4 |
0.0.0-20260628153353-2d5d72223df4 |
Affected products
- siyuan-note siyuan
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/siyuan-note/siyuan/security/advisories/GHSA-56mp-4f3v-fgj2
exploit, web, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-50551
advisory
-
github.com
/siyuan-note/siyuan
package
Sources
- CVE List CVE-2026-50551
- GitHub Advisory GHSA-56mp-4f3v-fgj2
- NVD CVE-2026-50551
- OSV GO-2026-5967
Fencer Intel 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.