CVE-2026-35400
LORIS incorrectly trusts user input in publication module
Description
LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 20.0.0 to before 27.0.3 and 28.0.1, an endpoint in the publication module was incorrectly trusting the baseURL submitted by a user's POST request rather than the internal LORIS value. This could result in a theoretical attacker with publication module access forging an email to an external domain under the attacker's control which appeared to come from LORIS. This vulnerability is fixed in 27.0.3 and 28.0.1.
INFO
Published Date :
April 8, 2026, 7:25 p.m.
Last Modified :
July 24, 2026, 9:10 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 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update LORIS to version 27.0.3 or 28.0.1.
- Verify the application's internal base URL configuration.
- Ensure proper input validation for user-submitted URLs.
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-2026-35400.
| URL | Resource |
|---|---|
| https://github.com/aces/Loris/security/advisories/GHSA-6prw-34x8-3gpg | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-35400 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-2026-35400
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-2026-35400 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-35400 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]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: LORIS de aces, Description: LORIS (Longitudinal Online Research and Imaging System) es una aplicación web autoalojada que proporciona gestión de datos y proyectos para la investigación en neuroimagen. Desde 20.0.0 hasta antes de 27.0.3 y 28.0.1, un endpoint en el módulo de publicación estaba confiando incorrectamente en la baseURL enviada por una solicitud POST de un usuario en lugar del valor interno de LORIS. Esto podría resultar en que un atacante teórico con acceso al módulo de publicación falsificara un correo electrónico a un dominio externo bajo el control del atacante que pareciera provenir de LORIS. Esta vulnerabilidad está corregida en 27.0.3 y 28.0.1. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'aces', 'product': 'Loris', 'versions': [{'status': 'affected', 'version': '>= 20.0.0, < 27.0.3'}, {'status': 'affected', 'version': '>= 28.0.0, < 28.0.1'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-35400', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-08T19:52:25.879615Z'} -
Initial Analysis by [email protected]
Apr. 21, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:mcgill:loris:28.0.0:*:*:*:*:*:*:* *cpe:2.3:a:mcgill:loris:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (including) 27.0.2 Added Reference Type GitHub, Inc.: https://github.com/aces/Loris/security/advisories/GHSA-6prw-34x8-3gpg Types: Vendor Advisory -
New CVE Received by [email protected]
Apr. 08, 2026
Action Type Old Value New Value Added Description LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 20.0.0 to before 27.0.3 and 28.0.1, an endpoint in the publication module was incorrectly trusting the baseURL submitted by a user's POST request rather than the internal LORIS value. This could result in a theoretical attacker with publication module access forging an email to an external domain under the attacker's control which appeared to come from LORIS. This vulnerability is fixed in 27.0.3 and 28.0.1. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N Added CWE CWE-59 Added Reference https://github.com/aces/Loris/security/advisories/GHSA-6prw-34x8-3gpg