CVE-2026-82650Public exploitNetwork attack vectorHinoki check available

Sensitive file disclosure via unrestricted template path

Published Aug 30, 2026 · Updated Aug 30, 2026

Path traversal in RenderTemplate in SiYuan 3.8.0 allows remote authenticated users to read sensitive workspace files through its API. RenderTemplate passes the caller-supplied workspace path to os.ReadFile after only a workspace-boundary check, omitting the file API's sensitive-path blocklist. The endpoint requires an authenticated administrator; disclosure of conf/conf.json exposes the API token and cookie-signing key.

CVSS severity4.4
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in RenderTemplate in SiYuan 3.8.0 allows remote authenticated users to read sensitive workspace files through its API. RenderTemplate passes the caller-supplied workspace path to os.ReadFile after only a workspace-boundary check, omitting the file API's sensitive-path blocklist. The endpoint requires an authenticated administrator; disclosure of conf/conf.json exposes the API token and cookie-signing key.

The record

CVE
CVE-2026-82650
Published
Aug 30, 2026
Updated
Aug 30, 2026
Vendor
SiYuan Note
Product
SiYuan
Classifications
CWE-668, CWE-863, T1552.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SiYuan Note · SiYuanversion=0 <3.8.1

Published CVSS scores

4.4GitHub Security AdvisoryCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
CWE-863Incorrect Authorization
T1552.001Credentials In Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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