{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-43918 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-43918 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-43918 is a high-severity authentication bypass vulnerability in FOSSBilling, published on 6 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-43918 and fix it if it is affected.\n\nWhat it is: CVE-2026-43918 is a high-severity authentication bypass vulnerability in FOSSBilling, published on 6 Jul 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-2026-43918 in the wild and no public exploit code.\n\nAffected product: FOSSBilling. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-43918/ (Markdown: https://insights.sbomify.com/CVE-2026-43918/index.md)","id":"CVE-2026-43918","markdown":"https://insights.sbomify.com/CVE-2026-43918/index.md","name":"CVE-2026-43918","record":{"aliases":["CVE-2026-43919","GHSA-qv6c-v49w-8g2j"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Billing management system","requires_auth":"low_privilege","summary":"Suspended or inactive users retain access via existing sessions and tokens because status checks are missing, allowing unauthorized access to billing data.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-613","name":"DEPRECATED: Insufficient Session Expiration"}],"description":"FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, when a client or staff/admin account is suspended or marked inactive, existing authenticated sessions are not invalidated. The session identity loaders in src/di.php (loggedin_client and loggedin_admin) only reject sessions if the backing account record no longer exists in the database. They do not verify that the account's status is still active. This allows a suspended or deactivated user to retain full access until their session naturally expires. This issue has been fixed in version 0.8.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Auth bypass in FOSSBilling","id":"CVE-2026-43918","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"FOSSBilling: Unauthenticated update patcher endpoint allows remote maintenance execution","id":"CVE-2026-43920"},"packages":[],"prev":{"headline":"Dokploy: Cross-Organization IDOR - Multiple tRPC endpoints missing activeOrganizationId validation","id":"CVE-2026-43917"},"products":["FOSSBilling"],"published":"2026-07-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-07-08","vendors":["FOSSBilling"]},"summary":"Suspended or inactive users retain access via existing sessions and tokens because status checks are missing, allowing unauthorized access to billing data.","url":"https://insights.sbomify.com/CVE-2026-43918/"}