PT-2026-37161 · Ci4Ms · Ci4Ms

Dapickle · CVE-2026-41891 · Published 2026-05-04 · Updated 2026-05-07

Positive Technologies (AI Summary)

CVSS v4.0

5.3

Medium

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions CI4MS versions 0.26.0 through 0.31.7.0

Description The auth filter contains commented-out code for checking if a user is deactivated or banned. While the loggedIn() function in CodeIgniter Shield verifies the status field to identify banned users, it does not re-verify the active field for existing sessions. Consequently, if an administrator deactivates a user by setting active to 0 after the user has already authenticated, the session cookie remains valid and auth()->loggedIn() continues to return true. This allows a deactivated user to maintain full backend access until their session expires.

Recommendations Update to version 0.31.8.0.

Exploit

Fix

Insufficient Session Expiration

Weakness Enumeration

CWE-613

Related Identifiers

CVE-2026-41891

GHSA-5HFV-C864-QCQ9

Affected Products

Ci4Ms

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41891.json · Exploit
• https://osv.dev/vulnerability/GHSA-5hfv-c864-qcq9 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41891 · Security Note
• https://osv.dev/vulnerability/CVE-2026-41891 · Vendor Advisory
• https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.8.0 · Note
• https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-5hfv-c864-qcq9 · Note
• https://github.com/ci4-cms-erp/ci4ms · Note
• https://github.com/ci4-cms-erp/ci4ms/commit/2f38284281ce6b435ea42003951f14109ac2cea7 · Note
• https://twitter.com/CVEarity/status/2052432116609368419 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2052279279807795293 · Twitter Post
• https://twitter.com/CVEnew/status/2052400830687609142 · Twitter Post
• https://t.me/CVEtracker/52939 · Telegram Post