GHSA-79wv-8rh2-9vp2: adminneo-org/adminneo (CVE-2026-96631)

Package	Ecosystem	Affected	Fixed in
adminneo-org/adminneo	Packagist	>=4.6.0, <5.5.1	5.5.1

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

AdminNeo (Packagist package adminneo-org/adminneo) versions 4.6.0 before 5.5.1 are affected by cookie attribute injection through the X-Forwarded-Prefix HTTP header, which is copied into Set-Cookie headers without sanitization. An attacker who can influence that header, such as via a forwarding reverse proxy or a man-in-the-middle position, could add attributes like Domain to cookies and cause the victim's browser to send the session and database-password encryption cookies to an attacker-controlled domain. Upgrade to version 5.5.1, which is listed as the fixed release.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.2	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N	GitHub Advisory Database

CISA KEV Not listed.
EPSS No score.

Timeline

31 Oct 2026, 13:53 UTC First seen by agentprime
31 Oct 2026, 13:53 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.