CVE-2026-75757
- Source
- https://cve.org/CVERecord?id=CVE-2026-75757
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75757.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-75757
- Aliases
-
- EEF-CVE-2026-75757
- GHSA-3259-55fp-w94j
- Published
- 2026-08-31T02:20:17Z
- Modified
- 2026-09-03T03:30:38Z
- Severity
-
- 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- AshAdmin cookie reader matches names by substring, enabling actor/session shadowing from a sibling subdomain
- Details
-
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.
- Database specific
{ "cna_assigner": "EEF", "cwe_ids": [ "CWE-565" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75757.json", "unresolved_ranges": [ { "extracted_events": [ { "introduced": "77a43cc4fa04cb59c38fc434568a35a38ecb995a" }, { "fixed": "e93a3408a85035e1f90275d02bc2470c96095e56" } ], "source": "AFFECTED_FIELD" } ] }- References
-
- https://cna.erlef.org/cves/CVE-2026-75757.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-75757
- https://repo.hex.pm
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75757.json
- https://github.com/ash-project/ash_admin/security/advisories/GHSA-3259-55fp-w94j
- https://nvd.nist.gov/vuln/detail/CVE-2026-75757
- https://github.com/ash-project/ash_admin/commit/e93a3408a85035e1f90275d02bc2470c96095e56
- https://github.com/ash-project/ash_admin