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Vulnerability record · CVE-2026-33953 · published 27 March 2026

CVE-2026-33953: Linkace server-side request forgery (ssrf) vulnerability

Linkace · Linkace

LinkAce 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 server-side requests to internal-only resources when those resources are referenced through an internal hostname. This allows an authenticated user to trigger server-side requests to internal services reachable by the LinkAce server but not directly reachable by an external user. Version 2.5.3 patches the issue.

8.5 CVSS 3.1 High EPSS 0.33% · top 76.9% CWE-918 · Server-side request forgery (SSRF)
8.5CVSS 3.1 base score
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

LinkAce 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 server-side requests to internal-only resources when those resources are referenced through an internal hostname. This allows an authenticated user to trigger server-side requests to internal services reachable by the LinkAce server but not directly reachable by an external user. Version 2.5.3 patches the issue.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/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-wp4g-qw9j-wfjg 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%8.4CVE-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%6.5CVE-2026-33954Linkace improper authorization vulnerabilityLinkAce 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…EPSS 0.38%

Source: NIST National Vulnerability Database (record CVE-2026-33953), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.