CVE-2026-87807CWE-89sql-injection

CVE-2026-87807

High · published September 9, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
38.2
In the wild
Unconfirmed
What it is

siyuan versions before v3.8.2 contain an authenticated SQL injection vulnerability in the fullTextSearchBlock endpoint's method=1 query parameter. Attackers can inject UNION SELECT statements to read the entire blocks table, bypassing publish-access controls and exposing all document content and sensitive attributes.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00451 · 38.2th percentile
Weakness
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Published
2026-09-09T16:17Z
References (2)
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-336w-67gx-gx2h · [email protected]https://www.vulncheck.com/advisories/siyuan-before-3.8.2-sql-injection-via-fulltextsearchblock · [email protected]
EPSS history
Timeline
  • 11 SEP 03:19Z
    EPSS moved — → 0%
    epss
  • 09 SEP 11:20Z
    siyuan before v3.8.2 SQL Injection via fullTextSearchBlock
    cvelistv5