9.2

CVE-2026-68587: siyuan-note siyuan Missing Authorization

CVSS: 9.2v4.0CriticalDeferred
AliasesGHSA-69mh-gvh4-8gp7GO-2026-6381
Published 03-08-2026Last modified 14-08-2026
Open JSON

Vulnerability summary

CVE-2026-68587 is a critical (CVSS 9.2) Missing Authorization vulnerability in siyuan-note siyuan. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.2/10
010
Critical · v4.0 (CVE.org)
EPSS score
0.42%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2026:21897-1SUSE-SU-2026:23855-1SUSE-SU-2026:23863-1

Timeline

  1. 03-08-2026
    PublishedVulnerability first disclosed.
  2. 14-08-2026
    Last modifiedVulnerability information updated.

Description

SiYuan versions before v3.7.3 contain an information disclosure vulnerability in the getHeadingDeleteTransaction, getHeadingLevelTransaction, and getHeadingInsertTransaction endpoints that return rendered block DOM without publish-access checks. Anonymous readers or publish RoleReader tokens can supply a heading block ID to read full rendered content of publish-disabled documents that should be restricted.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

+0.17 pp

From 0.24% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/siyuan-note/siyuan1 product
  • kernel< 0.0.0-20260721013353-69db783b782a
Siyuan-note1 product

2 vendors · 2 products

References

5 links