CVE-2026-69084
CriticalPublic exploitSiYuan versions <= v3.7.2 expose the /api/search/searchEmbedBlock endpoint, which passes a client-supplied SQL statement verbatim to the main read-write siyuan.db handle with no single-statement, read-only, or admin restrictions.
Published Aug 3, 2026 · Updated Sep 27, 2026 · Also known as EUVD-2026-52277, GHSA-p2x7-4c4p-8wh6, GHSA-vh22-h7hf-www7, GO-2026-6377
Key Facts
Patch immediately- CVE-2026-69084 is a critical-severity vulnerability (CVSS 9.9 v4) affecting Siyuan (B3log), github.com/siyuan-note/siyuan/kernel (go).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 1.6% probability of exploitation in the next 30 days.
- Fixed versions are available, including Siyuan 3.7.3, github.com/siyuan-note/siyuan/kernel 0.0.0-20260721002947-23a17d44b5f3, github.com/siyuan-note/siyuan/kernel 3.7.3.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
CVSS v4
9.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
EPSS (30-day exploit likelihood)
1.6%
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-69084 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
SiYuan versions <= v3.7.2 expose the /api/search/searchEmbedBlock endpoint, which passes a client-supplied SQL statement verbatim to the main read-write siyuan.db handle with no single-statement, read-only, or admin restrictions. The endpoint is gated only by CheckAuth, making it reachable by the publish RoleReader token and by anonymous users when publish authentication is disabled. Because the underlying driver executes stacked statements, an attacker can read and modify content across all opened cleartext notebooks (encrypted per-box notebooks are excluded). Fixed in v3.7.3.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SiyuanB3log | See advisory | 3.7.3 |
| github.com/siyuan-note/siyuan/kernelgo | See advisory | 0.0.0-20260721002947-23a17d44b5f3 |
Patched Releases
Siyuan
3.7.3
github.com/siyuan-note/siyuan/kernel
0.0.0-20260721002947-23a17d44b5f3, 3.7.3
Timeline
Publicly disclosed
Aug 3, 2026
Last updated
Sep 27, 2026
Weakness Type
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
References
- advisoryGHSA advisory
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69084.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-69084
- articlehttps://github.com/siyuan-note/siyuan/commit/0015cbafbf685363b217bbc46283a3c0f51c79fa
FAQ
Common Questions.
SiYuan versions <= v3.7.2 expose the /api/search/searchEmbedBlock endpoint, which passes a client-supplied SQL statement verbatim to the main read-write siyuan.db handle with no single-statement, read-only, or admin restrictions.
Affected: Siyuan (B3log); github.com/siyuan-note/siyuan/kernel (go). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Siyuan 3.7.3, github.com/siyuan-note/siyuan/kernel 0.0.0-20260721002947-23a17d44b5f3, github.com/siyuan-note/siyuan/kernel 3.7.3.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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