GHSA-8fq3-c5w3-pj3q: ci4-cms-erp/ci4ms (CVE-2026-34572)

CI4MS: Account Deactivation Module Grants Full Persistent Unauthorized Access for All‑Roles via Improper Session Invalidation (Logic Flaw)

CVSS 8.8 HighEPSS 0.0051 · 43rd percentile

Published by the GitHub Advisory Database at 1 Apr 2026, 22:09 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
ci4-cms-erp/ci4ms	Packagist	<0.31.0.0	0.31.0.0

Identifiers

GHSA-8fq3-c5w3-pj3q · CVE-2026-34572 · PKSA-srvq-v3bs-mj79

Weakness (CWE)

CWE-284 · CWE-613 · CWE-1254

Machine-written summary

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

CI4MS (Packagist package ci4-cms-erp/ci4ms) versions before 0.31.0.0 do not end existing sessions when a user account is deactivated, so a deactivated user stays logged in and keeps the access their role allows until they log out. An attacker who already has a valid account and session can exploit this to retain access. Upgrade to version 0.31.0.0 or later.

Written 3 Nov 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
8.8	High	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0051, the 43rd percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:25 UTC First seen by agentprime
31 Oct 2026, 14:25 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.