# CVE-2026-34572: CI4MS: Account Deactivation Module Grants Full Persistent Unauthorized Access for All‑Roles via Improper Session Invalidation (Logic Flaw) > Deactivated users retain indefinite access because sessions are not revoked, allowing persistent unauthorized access until manual logout. - **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 1 Apr 2026 - **Updated:** 2 Apr 2026 - **Also known as:** GHSA-8fq3-c5w3-pj3q ## What is CVE-2026-34572? CVE-2026-34572 is a high-severity missing authorization vulnerability in ci4-cms-erp ci4ms, published on 1 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application fails to immediately revoke active user sessions when an account is deactivated. Due to a logic flaw in the backend design, account state changes are enforced only during authentication (login), not for already-established sessions. The system implicitly assumes that authenticated users remain trusted for the lifetime of their session. There is no session expiration or account expiration mechanism in place, causing deactivated accounts to retain indefinite access until the user manually logs out. This behavior breaks the intended access control policy and results in persistent unauthorized access, representing a critical security flaw. This issue has been patched in version 0.31.0.0. Weakness: CWE-613 (DEPRECATED: Insufficient Session Expiration), CWE-284 (Improper Access Control), CWE-1254 (Incorrect Comparison Logic Granularity) ## Which versions are affected by CVE-2026-34572? 2 open source packages ship an affected version, including ci4-cms-erp/ci4ms. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `ci4-cms-erp/ci4ms` | Packagist | All versions | 0.31.0.0 | | `ci4-cms-erp/ci4ms` | Packagist | All versions | 0.31.0.0 | Products: Ci4-Cms-Erp Ci4ms. ## How do I fix CVE-2026-34572? Upgrade ci4-cms-erp/ci4ms to 0.31.0.0 or later. ## Is CVE-2026-34572 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34572 exists. ## Other vulnerabilities in ci4-cms-erp ci4ms - [CVE-2026-34569](https://insights.sbomify.com/CVE-2026-34569/): CI4MS: Blogs Categories Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS (critical 10.0) - [CVE-2026-34571](https://insights.sbomify.com/CVE-2026-34571/): CI4MS: Stored Cross‑Site Scripting (Stored XSS) in Backend User Management Allows Session Hijacking and Full Administrative Account Compromise (critical 10.0) - [CVE-2026-25510](https://insights.sbomify.com/CVE-2026-25510/): CI4MS Vulnerable to Remote Code Execution (RCE) via Arbitrary File Creation and Save in File Editor (critical 10.0) - [CVE-2026-34989](https://insights.sbomify.com/CVE-2026-34989/): CI4MS: Profile & User Management Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS (critical 9.4) - [CVE-2026-34559](https://insights.sbomify.com/CVE-2026-34559/): CI4MS: Blogs Tags Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS (critical 9.1) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-34572 and fix it if it is affected. What it is: CVE-2026-34572 is a high-severity missing authorization vulnerability in ci4-cms-erp ci4ms, published on 1 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34572 exists. Affected packages and fixed versions: - ci4-cms-erp/ci4ms (Packagist): affected all versions; fixed in 0.31.0.0 - ci4-cms-erp/ci4ms (Packagist): affected all versions; fixed in 0.31.0.0 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2026-34572/ (Markdown: https://insights.sbomify.com/CVE-2026-34572/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34572 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34572 - OSV: https://osv.dev/vulnerability/CVE-2026-34572 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-34572/ Summaries are generated and may contain mistakes; the official description above is the record.