CVE-2026-40905
LinkAce: Password Reset Poisoning via X-Forwarded-Host Header Injection Leading to Account Takeover
Description
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.
INFO
Published Date :
April 21, 2026, 9:16 p.m.
Last Modified :
Oct. 26, 2026, 10:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update LinkAce to version 2.5.4 or later.
- Verify the application properly validates HTTP headers.
- Implement input validation for user-controlled headers.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40905.
| URL | Resource |
|---|---|
| https://github.com/Kovah/LinkAce/security/advisories/GHSA-48wv-jpf4-vjfv |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40905 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40905
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40905 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40905 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added Translation Title: LinkAce de Kovah, Description: LinkAce es un archivo autoalojado para recopilar enlaces de sitios web. Antes de 2.5.4, se identificó una vulnerabilidad de envenenamiento de restablecimiento de contraseña en la aplicación debido a la confianza indebida en los encabezados HTTP controlados por el usuario. La aplicación utiliza el encabezado X-Forwarded-Host al generar URL de restablecimiento de contraseña. Al manipular este encabezado durante una solicitud de restablecimiento de contraseña, un atacante puede inyectar un dominio controlado por el atacante en el enlace de restablecimiento enviado por correo electrónico. Como resultado, la víctima recibe un correo electrónico de restablecimiento de contraseña que contiene un enlace malicioso que apunta a un dominio controlado por el atacante. Cuando la víctima hace clic en el enlace, el token de restablecimiento de contraseña es transmitido al servidor controlado por el atacante. Un atacante puede capturar este token y usarlo para restablecer la contraseña de la víctima, lo que lleva a una toma de control total de la cuenta. Esta vulnerabilidad está corregida en 2.5.4. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Kovah', 'product': 'LinkAce', 'versions': [{'status': 'affected', 'version': '< 2.5.4'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-40905', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-04-21T20:33:04.310837Z'} -
New CVE Received by [email protected]
Apr. 21, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Added CWE CWE-601 Added Reference https://github.com/Kovah/LinkAce/security/advisories/GHSA-48wv-jpf4-vjfv