{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40874 exists.","fix":"No fix has been published for CVE-2026-40874 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-40874 is a medium-severity missing authorization vulnerability in mailcow-dockerized, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-40874 and fix it if it is affected.\n\nWhat it is: CVE-2026-40874 is a medium-severity missing authorization vulnerability in mailcow-dockerized, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40874 exists.\n\nAffected product: mailcow-dockerized. 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-2026-40874/ (Markdown: https://insights.sbomify.com/CVE-2026-40874/index.md)","id":"CVE-2026-40874","markdown":"https://insights.sbomify.com/CVE-2026-40874/index.md","name":"CVE-2026-40874","record":{"aliases":["GHSA-jjxh-rm7p-hjc3"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"mailcow email suite","requires_auth":"low_privilege","summary":"Any authenticated user can delete Forwarding Hosts in mailcow: dockerized, potentially disrupting mail services due to missing administrator verification.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, no administrator verification takes place when deleting Forwarding Hosts with `/api/v1/delete/fwdhost`. Any authenticated user can call this API. Checks are only applied for edit/add actions, but deletion can still significantly disrupt the mail service. Version 2026-03b fixes the vulnerability.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"mailcow: dockerized missing authorization on Forwarding Hosts delete action","id":"CVE-2026-40874","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"mailcow: dockerized vulnerable to stored XSS in user login history real_rip","id":"CVE-2026-40875"},"packages":[],"prev":{"headline":"mailcow: dockerized vulnerable to stored XSS in Quarantine attachment filenames","id":"CVE-2026-40873"},"products":["mailcow-dockerized"],"published":"2026-04-21","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-21","vendors":["mailcow"]},"summary":"Any authenticated user can delete Forwarding Hosts in mailcow: dockerized, potentially disrupting mail services due to missing administrator verification.","url":"https://insights.sbomify.com/CVE-2026-40874/"}