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CVE-2026-72802 siyuan-note CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-12T20:17:52.110Z and has not been modified since then. The CVE-2026-72802 vulnerability affects SiYuan versions before v3.7.4. It is caused by the resolveAssetPath endpoint returning absolute filesystem paths unmodified to CheckAuth-only requests. An attacker can exploit this by harvesting relative asset paths from published documents and submitting them to resolveAssetPath to obtain the server's absolute workspace path, disclosing the operating-system username and installation layout. Users of SiYuan versions before v3.7.4 should apply the patch to prevent information disclosure. Administrators and security teams should review the vulnerability details and implement defensive measures to protect against potential exploitation.

Vendor
siyuan-note
Product
siyuan
CVSS
MEDIUM 6.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-12
Original CVE updated
2026-08-26
Advisory published
2026-08-12
Advisory updated
2026-08-26

Who should care

Users of SiYuan versions before v3.7.4 should apply the patch to prevent information disclosure. Administrators and security teams should review the vulnerability details and implement defensive measures to protect against potential exploitation.

Technical summary

The CVE-2026-72802 vulnerability affects SiYuan versions before v3.7.4. It is caused by the resolveAssetPath endpoint returning absolute filesystem paths unmodified to CheckAuth-only requests. An attacker can exploit this by harvesting relative asset paths from published documents and submitting them to resolveAssetPath to obtain the server's absolute workspace path, disclosing the operating-system username and installation layout.

Defensive priority

Medium-priority defensive actions are recommended due to the potential for information disclosure.

Recommended defensive actions

  • Review and apply the vendor's patch for SiYuan version v3.7.4 or later.
  • Restrict access to the resolveAssetPath endpoint to authenticated users only.
  • Monitor for suspicious activity related to asset path resolution.
  • Implement additional logging and monitoring to detect potential exploitation attempts.
  • Consider using a web application firewall to filter malicious requests.

Evidence notes

The CVE-2026-72802 record indicates that SiYuan versions before v3.7.4 have an information disclosure vulnerability in the resolveAssetPath endpoint. The vulnerability allows attackers to obtain the server's absolute workspace path by submitting relative asset paths harvested from published documents. This discloses the operating-system username and installation layout. Evidence is based on CVE and NVD records, as well as vendor advisories.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-72802 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-72802

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

  • CVE-2026-72802 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-72802

    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.