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CVE-2026-126264

7.7, high

Siyuan-note siyuan Exposure of Sensitive Information Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.7, high high CVSS v3.1
EPSS, next 30 days
0.5% higher than 41.4% of scored CVEs
Exploitation
No public evidence
Published
13 Nov 2026yesterday

Description

SiYuan before 3.8.9 contains an information disclosure vulnerability that allows authenticated Reader users to retrieve credential-named widget files by bypassing the sensitive-path guard in getFile. Attackers can request paths like /data/widgets/<package>/credentials.json for publish-referenced widgets to obtain API keys, tokens, or other stored secrets.

Details

Vendor
Siyuan-note
Product
siyuan
Weakness
CWE-200 (opens in a new tab)
Status
Deferred
Updated
13 Nov 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References 3

Patches and fixes 1

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Siyuan-note CVEs

Every Siyuan-note CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-126265 SiYuan 2.1.0 before 3.8.9 contains a flaw where the loginAuth CAPTCHA challenge lives in a signed client-side cookie, allowing reuse of… EPSS 0.4% 7.4, high
  • CVE-2026-85175 SiYuan versions <= 3.8.1 (fixed in v3.8.2) contain an incomplete blocklist in the IsForbiddenAbsPath() function… EPSS 0.3% 8.8, high

Beyond this page

Is CVE-2026-126264 in your network?

This page tells you how dangerous CVE-2026-126264 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 14 Nov 2026, not the live upstream state.