HOMEVULNERABILITIESCVE-2026-33669
HIGH

CVE-2026-33669

CWE-125Published: March 26, 2026· Updated: Mar 30, 2026

7.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:13.1th

Official Description

SiYuan is a personal knowledge management system. Prior to version 3.6.2, document IDs were retrieved via the /api/file/readDir interface, and then the /api/block/getChildBlocks interface was used to view the content of all documents. Version 3.6.2 patches the issue.

NVD Source

Technical Analysis

CVE-2026-33669 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

b3log1 product
siyuan
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

ADVISORYhttps://github.com/siyuan-note/siyuan/security/advisories/GHSA-34xj-66v3-6j83

All References (1)

→
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34xj-66v3-6j83Exploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-33669
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMar 26, 2026

Related CVEs (CWE-125)

CVE-2026-34987
9.9
CVE-2026-33642
9.8
CVE-2026-24213
9.8
CVE-2025-15646
9.8
CVE-2026-42799
9.8
CVE-2026-14420
9.6

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33669 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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