Answer in brief
CVE-2026-75757 records a High severity (CVSS 8.3) vulnerability in AshAdmin cookie reader matches names by substring, enabling actor/session shadowing from a sibling subdomain. The current sources do not mark it as known exploited. The current feed maps ash-project/ash_admin (generic), ash-project/ash_admin (generic), ash-project/ash-project/ash_admin (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ash-project/ash_admin (generic), ash-project/ash_admin (generic), ash-project/ash-project/ash_admin (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ash-project/ash_admingeneric | >=77a43cc4fa04cb59c38fc434568a35a38ecb995a <e93a3408a85035e1f90275d02bc2470c96095e56 | e93a3408a85035e1f90275d02bc2470c96095e56 |
| ash-project/ash_admingeneric | >=0.9.1 <1.3.1 | 1.3.1 |
| ash-project/ash-project/ash_admingeneric | >=77a43cc4fa04cb59c38fc434568a35a38ecb995a <e93a3408a85035e1f90275d02bc2470c96095e56 | e93a3408a85035e1f90275d02bc2470c96095e56 |
Published upstream
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 31, 2026
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.
Quoted source text, attributed separately from HOL analysis.