{"answers":{"affected":"2 open source packages ship an affected version, including ci4-cms-erp/ci4ms.","exploited":"There is no known exploitation of CVE-2026-41891 in the wild and no public exploit code.","fix":"Upgrade ci4-cms-erp/ci4ms to 0.31.8.0 or later.","what":"CVE-2026-41891 is a medium-severity authentication bypass vulnerability in ci4-cms-erp ci4ms, published on 7 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-41891 and fix it if it is affected.\n\nWhat it is: CVE-2026-41891 is a medium-severity authentication bypass vulnerability in ci4-cms-erp ci4ms, published on 7 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-41891 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ci4-cms-erp/ci4ms (Packagist): affected from 0.26.0; fixed in 0.31.8.0\n- ci4-cms-erp/ci4ms (Packagist): affected from 0.26.0; fixed in 0.31.8.0\n\nTask:\n1. 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.\n2. 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.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-41891/ (Markdown: https://insights.sbomify.com/CVE-2026-41891/index.md)","id":"CVE-2026-41891","markdown":"https://insights.sbomify.com/CVE-2026-41891/index.md","name":"CVE-2026-41891","record":{"aliases":["GHSA-5hfv-c864-qcq9"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"CodeIgniter CMS skeleton","requires_auth":"low_privilege","summary":"Deactivated users can bypass authentication checks in CI4MS due to commented-out code, allowing unauthorized access to the system.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-613","name":"DEPRECATED: Insufficient Session Expiration"}],"description":"CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. From version 0.26.0 to before version 0.31.8.0, the auth filter has the deactivated/banned user check commented out. This issue has been patched in version 0.31.8.0.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"CI4MS: Deactivated User Session Bypass (active=0)","id":"CVE-2026-41891","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)","id":"CVE-2026-41893"},"packages":[{"ecosystem":"Packagist","fixed":["0.31.8.0"],"introduced":["0.26.0"],"last_affected":[],"package":"ci4-cms-erp/ci4ms","purl":null,"source":"GHSA-5hfv-c864-qcq9"},{"ecosystem":"Packagist","fixed":["0.31.8.0"],"introduced":["0.26.0"],"last_affected":[],"package":"ci4-cms-erp/ci4ms","purl":"pkg:composer/ci4-cms-erp/ci4ms","source":"GHSA-5hfv-c864-qcq9"}],"prev":{"headline":"CI4MS: Arbitrary Database Table Drop via Theme deleteProcess","id":"CVE-2026-41890"},"products":["ci4ms"],"published":"2026-05-07","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-07","vendors":["ci4-cms-erp"]},"summary":"Deactivated users can bypass authentication checks in CI4MS due to commented-out code, allowing unauthorized access to the system.","url":"https://insights.sbomify.com/CVE-2026-41891/"}