PT-2026-34172 · Kovah · Linkace

Published 2026-04-21 · Updated 2026-04-27 · CVE-2026-40905

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions LinkAce versions prior to 2.5.4

Description An issue exists where the application improperly trusts user-controlled HTTP headers. Specifically, the application uses the X-Forwarded-Host header when generating password reset URLs. An attacker can manipulate this header during a password reset request to inject a malicious domain into the reset link sent via email. If a victim clicks this link, the password reset token is transmitted to the attacker-controlled server, allowing the attacker to capture the token and reset the victim's password, resulting in full account takeover.

Recommendations Update to version 2.5.4.

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2026-40905

Affected Products

Linkace

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-40905 · Security Note
• https://github.com/Kovah/LinkAce/security/advisories/GHSA-48wv-jpf4-vjfv · Note
• https://twitter.com/CVEnew/status/2048910149369356363 · Twitter Post