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Vulnerability record · CVE-2026-33954 · published 27 March 2026

CVE-2026-33954: Linkace improper authorization vulnerability

Linkace · Linkace

LinkAce is a self-hosted archive to collect website links. In versions prior to 2.5.3, a private note attached to a non-private link can be disclosed to a different authenticated user via the web interface. The API appears to correctly enforce note visibility, but the web link detail page renders notes without applying equivalent visibility filtering. As a result, an authenticated user who is allowed to view another user's `internal` or `public` link can read that user's `private` notes attached to the link. Version 2.5.3 patches the issue.

6.5 CVSS 3.1 Medium EPSS 0.38% · top 70.3% CWE-285 · Improper authorization
6.5CVSS 3.1 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

LinkAce is a self-hosted archive to collect website links. In versions prior to 2.5.3, a private note attached to a non-private link can be disclosed to a different authenticated user via the web interface. The API appears to correctly enforce note visibility, but the web link detail page renders notes without applying equivalent visibility filtering. As a result, an authenticated user who is allowed to view another user's `internal` or `public` link can read that user's `private` notes attached to the link. Version 2.5.3 patches the issue.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Kovah/LinkAce/security/advisories/GHSA-88h3-cq25-vw8q ExploitVendor Advisory
https://github.com/Kovah/LinkAce/security/advisories/GHSA-88h3-cq25-vw8q ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2026-27458Linkace vulnerabilityLinkAce is a self-hosted archive to collect website links. Versions 2.4.2 and below have a Stored Cross-site Scripting vulnerability through the Atom…EPSS 0.26%8.7CVE-2025-62722Linkace cross-site scripting vulnerabilityLinkAce is a self-hosted archive to collect website links. In versions 2.3.1 and below, the social media sharing functionality contains a Stored Cros…EPSS 0.25%8.5CVE-2026-33953Linkace server-side request forgery (ssrf) vulnerabilityLinkAce is a self-hosted archive to collect website links. Versions prior to 2.5.3 block direct requests to private IP literals, but still performs s…EPSS 0.33%8.4CVE-2025-53838Linkace cross-site scripting vulnerabilityLinkAce is a self-hosted archive to collect website links. A stored cross-site scripting (XSS) vulnerability was discovered in versions prior to 2.1.…EPSS 0.27%7.6CVE-2024-56508Linkace unrestricted file upload vulnerabilityLinkAce is a self-hosted archive to collect links of your favorite websites. Prior to 1.15.6, a file upload vulnerability exists in the LinkAce. This…EPSS 0.43%7.3CVE-2025-59424Linkace cross-site scripting vulnerabilityLinkAce is a self-hosted archive to collect website links. Prior to 2.3.1, a Stored Cross-Site Scripting (XSS) vulnerability has been identified on t…EPSS 0.34%7.1CVE-2025-62721Linkace information exposure vulnerabilityLinkAce is a self-hosted archive to collect website links. In versions 2.3.1 and below, authenticated RSS feed endpoints in the FeedController class …EPSS 0.37%7.1CVE-2025-62720Linkace information exposure vulnerabilityLinkAce is a self-hosted archive to collect website links. Versions 2.3.1 and below allow any authenticated user to export the entire database of lin…EPSS 0.37%

Source: NIST National Vulnerability Database (record CVE-2026-33954), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.