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CVE-2026-82650 siyuan-note CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-30T15:16:45.610Z and has not been modified since then. CVE-2026-82650 is a Medium-severity vulnerability in SiYuan 3.8.0, allowing authenticated attackers to read sensitive workspace files via the RenderTemplate function in kernel/model/template.go, reachable through the POST /api/template/render endpoint. The issue is fixed in SiYuan version 3.8.1. Affected deployments should prioritize updates and review compensating controls. Evidence is limited; further verification is recommended. Additional review of workspace file exposure and API token management is suggested.

Vendor
siyuan-note
Product
siyuan
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-30
Original CVE updated
2026-08-30
Advisory published
2026-08-30
Advisory updated
2026-08-30

Who should care

Users of SiYuan 3.8.0, administrators of SiYuan installations, and security teams monitoring for potential path traversal attacks should review and address this vulnerability. Prioritization is recommended for environments where sensitive file exposure could impact operations or security posture. Review of API token management and workspace file access controls is also advised.

Technical summary

CVE-2026-82650 is a Medium-severity vulnerability in SiYuan 3.8.0. The RenderTemplate function in kernel/model/template.go, accessible via the POST /api/template/render endpoint, allows authenticated attackers to read sensitive workspace files due to insufficient path restrictions. The vulnerability is fixed in SiYuan version 3.8.1. Affected deployments should prioritize updates and review compensating controls.

Defensive priority

Authenticated attackers may exploit this Medium-severity vulnerability to read sensitive workspace files, including API tokens and cookie signing keys.

Recommended defensive actions

  • Inventory and verify SiYuan installations for version 3.8.0
  • Restrict access to the /api/template/render endpoint
  • Monitor for suspicious API requests
  • Update to SiYuan version 3.8.1 or later
  • Review and rotate API tokens and cookie signing keys

Evidence notes

The CVE-2026-82650 vulnerability in SiYuan 3.8.0 allows authenticated attackers to read sensitive workspace files via the RenderTemplate function in kernel/model/template.go, reachable through the POST /api/template/render endpoint. The issue is fixed in v3.8.1. Evidence is limited; further verification is recommended. Additional review of workspace file exposure and API token management is suggested.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-82650 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-82650

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-82650 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-82650

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.