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Back to active CVEs
High · CVSS 8.7CVE-2026-87807

siyuan before v3.8.2 SQL Injection via fullTextSearchBlockCVE-2026-87807

Answer in brief

CVE-2026-87807 records a High severity (CVSS 8.7) vulnerability in siyuan before v3.8.2 SQL Injection via fullTextSearchBlock. The current sources do not mark it as known exploited. The current feed maps siyuan-note/siyuan (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 9, 2026Updated Oct 8, 2026Source checked Oct 25, 2026First seen by HOL Sep 9, 2026Material review Oct 8, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps siyuan-note/siyuan (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
siyuan-note/siyuangeneric>=0 <3.8.23.8.2

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for siyuan-note/siyuan.
  2. 2Review the reported fix. Update siyuan-note/siyuan to 3.8.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 9, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress Newsletters plugin <= 4.18.1 - SQL Injection vulnerabilityAlso CWE-89
  • WordPress Product Filter by WBW plugin <= 3.4.6 - SQL Injection vulnerabilityAlso CWE-89
  • pig-mesh pig SqlFilterArgumentResolver.java orderItem.getColumn sql injectionAlso CWE-89

Record context

Vulnerability class
SQL Injection
EPSS
Not reported
CWE IDs
CWE-89
Source
CVE List V5
Source checked
Oct 25, 2026
References
2 linked sources
Open source record