Kovah LinkAce up to 2.5.3 redirect

Summaryinfo

A vulnerability described as problematic has been identified in Kovah LinkAce up to 2.5.3. This affects an unknown part. Such manipulation leads to redirect. This vulnerability is referenced as CVE-2026-40905. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Kovah LinkAce up to 2.5.3. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. CVE summarizes:

LinkAce is a self-hosted archive to collect website links. Prior to 2.5.4, a password reset poisoning vulnerability was identified in the application due to improper trust of user-controlled HTTP headers. The application uses the X-Forwarded-Host header when generating password reset URLs. By manipulating this header during a password reset request, an attacker can inject an attacker-controlled domain into the reset link sent via email. As a result, the victim receives a password reset email containing a malicious link pointing to an attacker-controlled domain. When the victim clicks the link, the password reset token is transmitted to the attacker-controlled server. An attacker can capture this token and use it to reset the victim’s password, leading to full account takeover. This vulnerability is fixed in 2.5.4.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-40905 since 04/15/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1204.001.

Upgrading to version 2.5.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-24473). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Kovah

Name

• LinkAce

Version

• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3

Website

• Product: https://github.com/Kovah/LinkAce/

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Once again VulDB remains the best source for vulnerability data.

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