ash-project ash_admin up to 1.3.0 Cookie improper authorization

Summaryinfo

A vulnerability was found in ash-project ash_admin up to 1.3.0 and classified as critical. This affects an unknown part of the component Cookie. The manipulation results in improper authorization. This vulnerability is reported as CVE-2026-75757. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in ash-project ash_admin up to 1.3.0. It has been classified as critical. Affected is an unknown code of the component Cookie. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Reliance on Cookies without Validation and Integrity Checking vulnerability in ash-project ash_admin lets an attacker who controls a sibling subdomain rebind an admin's session to a different actor, tenant, or authorization mode. AshAdmin's client JavaScript read its state cookies (tenant, actor_resource, actor_primary_key, actor_action, actor_domain, actor_authorizing, actor_paused) by matching the cookie name with an unanchored regular expression (new RegExp(name + "=([^;]+)")) against the whole document.cookie. Any cookie whose name merely ends with the requested name therefore matches, and whichever is serialized first wins. Because cookies are shared across a registrable domain, a compromised sibling subdomain can set a shadowing cookie (for example xactor_authorizing) with Domain=.example.com that flows unvalidated into the admin's LiveSocket connect params. The fix matches cookie names by exact equality. This issue affects ash_admin: from 0.9.1 before 1.3.1.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-75757 since 08/31/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. 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 T1548.002.

Upgrading to version 1.3.1 eliminates this vulnerability.

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Productinfo

Type

• Project Management Software

Vendor

• ash-project

Name

• ash_admin

Version

• 1.0
• 1.1
• 1.2
• 1.3.0

Website

• Product: https://github.com/ash-project/ash_admin/

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Once again VulDB remains the best source for vulnerability data.

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