CVE-2026-10861
MISP post-login open redirect via pre_login_requested_url
Description
An open redirect vulnerability existed in MISP UsersController::routeafterlogin() because the value stored in the pre_login_requested_url session key was used as the post-login redirect destination without sufficiently enforcing that it was a local application path. An unauthenticated remote attacker could craft a link that causes a victim to visit a trusted MISP instance and, after successful authentication, be redirected to an attacker-controlled external URL. This could be abused to increase the credibility of phishing attacks, redirect users to counterfeit login pages, or deliver attacker-controlled content from an untrusted domain. CWE-601 describes this weakness as accepting user-controlled input that specifies an external link and using it in a redirect, with phishing as a common consequence. The patch mitigates the issue by decoding and parsing the URL, rejecting URLs with a scheme, host, user component, missing or non-local path, and protocol-relative forms such as //example.com and /\example.com.
INFO
Published Date :
June 4, 2026, 2:16 p.m.
Last Modified :
July 22, 2026, 8:10 p.m.
Remotely Exploit :
Yes !
Source :
5a6e4751-2f3f-4070-9419-94fb35b644e8
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 5a6e4751-2f3f-4070-9419-94fb35b644e8 | ||||
| CVSS 4.0 | MEDIUM | 5a6e4751-2f3f-4070-9419-94fb35b644e8 |
Solution
- Apply the security patch provided by the vendor.
- Validate all redirect URLs strictly.
- Reject URLs with schemes or non-local paths.
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-2026-10861.
| URL | Resource |
|---|---|
| https://github.com/MISP/MISP/commit/ae760b7bf534f2798810d59a1f961b31adb3443e | Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-10861 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-2026-10861
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-2026-10861 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-10861 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. 22, 2026
Action Type Old Value New Value Added Translation Title: MISP, Description: Una vulnerabilidad de redirección abierta existía en MISP UsersController::routeafterlogin() porque el valor almacenado en la clave de sesión pre_login_requested_url se utilizaba como destino de redirección posterior al inicio de sesión sin aplicar suficientemente que fuera una ruta de aplicación local. Un atacante remoto no autenticado podría crear un enlace que hace que una víctima visite una instancia de MISP de confianza y, después de una autenticación exitosa, sea redirigida a una URL externa controlada por el atacante. Esto podría ser abusado para aumentar la credibilidad de los ataques de phishing, redirigir a los usuarios a páginas de inicio de sesión falsificadas o entregar contenido controlado por el atacante desde un dominio no confiable. CWE-601 describe esta debilidad como aceptar una entrada controlada por el usuario que especifica un enlace externo y usarla en una redirección, con el phishing como una consecuencia común. El parche mitiga el problema decodificando y analizando la URL, rechazando URLs con un esquema, host, componente de usuario, ruta faltante o no local, y formas relativas al protocolo como //example.com y /\example.com. -
CPE Deprecation Remap by [email protected]
Jun. 22, 2026
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:* versions from (excluding) 2.5.39 OR *cpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:* versions from (excluding) 2.5.39 -
CVE Modified by 5a6e4751-2f3f-4070-9419-94fb35b644e8
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'misp', 'product': 'misp', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '2.5.38'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-10861', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-04T13:45:04.944521Z'} -
Initial Analysis by [email protected]
Jun. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:* versions up to (excluding) 2.5.39 Added Reference Type CIRCL: https://github.com/MISP/MISP/commit/ae760b7bf534f2798810d59a1f961b31adb3443e Types: Patch -
New CVE Received by 5a6e4751-2f3f-4070-9419-94fb35b644e8
Jun. 04, 2026
Action Type Old Value New Value Added Description An open redirect vulnerability existed in MISP UsersController::routeafterlogin() because the value stored in the pre_login_requested_url session key was used as the post-login redirect destination without sufficiently enforcing that it was a local application path. An unauthenticated remote attacker could craft a link that causes a victim to visit a trusted MISP instance and, after successful authentication, be redirected to an attacker-controlled external URL. This could be abused to increase the credibility of phishing attacks, redirect users to counterfeit login pages, or deliver attacker-controlled content from an untrusted domain. CWE-601 describes this weakness as accepting user-controlled input that specifies an external link and using it in a redirect, with phishing as a common consequence. The patch mitigates the issue by decoding and parsing the URL, rejecting URLs with a scheme, host, user component, missing or non-local path, and protocol-relative forms such as //example.com and /\example.com. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Green Added CWE CWE-601 Added Reference https://github.com/MISP/MISP/commit/ae760b7bf534f2798810d59a1f961b31adb3443e