CVE-2026-72803CWE-862broken-access-control

CVE-2026-72803

Medium · published August 13, 2026

CVSS v3.1
5.8
EPSS
0%
Percentile
24.3
In the wild
Unconfirmed
What it is

SiYuan versions before v3.7.4 fail to enforce publish-access checks in the getBlockAttrs and batchGetBlockAttrs endpoints. Attackers can retrieve block attributes including names, aliases, memos, and custom fields from protected documents by sending POST requests with block IDs.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00325 · 24.3th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-08-13T00:17Z
References (3)
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-qvq9-hq6p-v378 · [email protected]https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getblockattrs · [email protected]https://github.com/siyuan-note/siyuan/security/advisories/GHSA-qvq9-hq6p-v378 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 12 AUG 19:07Z
    SiYuan before v3.7.4 Information Disclosure via getBlockAttrs
    cvelistv5