{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-47085 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-47085 is a medium-severity authentication bypass vulnerability in cyrusimap Cyrus IMAP, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-47085 and fix it if it is affected.\n\nWhat it is: CVE-2026-47085 is a medium-severity authentication bypass vulnerability in cyrusimap Cyrus IMAP, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-47085 in the wild and no public exploit code.\n\nAffected product: cyrusimap Cyrus IMAP. 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-2026-47085/ (Markdown: https://insights.sbomify.com/CVE-2026-47085/index.md)","id":"CVE-2026-47085","markdown":"https://insights.sbomify.com/CVE-2026-47085/index.md","name":"CVE-2026-47085","record":{"aliases":["DEBIAN-CVE-2026-47085","GHSA-8jrh-wq6h-53c4","UBUNTU-CVE-2026-47085"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Cyrus IMAP server","requires_auth":"none","summary":"Attackers can forge URLAUTH tokens to read mailbox data if the obscure URLAUTH feature is enabled and folder names are known.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-340","name":"Generation of Predictable Numbers or Identifiers"}],"description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. URLAUTH token forgery can occur via a missing mboxkey. If an attacker knew a folder name on the victim's account for which the victim had never issued an auth URL, they could forge a working URLAUTH token by computing an HMAC-SHA1 value with a predictable key, giving them read access to the mailbox. (URLAUTH is an obscure feature, meaning that the odds of any user actually being susceptible to this attack are very low. Perhaps no public clients use URLAUTH.)","ecosystems":[],"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":"Auth bypass in Cyrus IMAP","id":"CVE-2026-47085","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":"Missing authorization in Cyrus IMAP","id":"CVE-2026-47086"},"packages":[],"prev":{"headline":"Missing authorization in Cyrus IMAP","id":"CVE-2026-47084"},"products":["Cyrus IMAP"],"published":"2026-07-16","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":"partial"},"state":"PUBLISHED","updated":"2026-07-16","vendors":["cyrusimap"]},"summary":"Attackers can forge URLAUTH tokens to read mailbox data if the obscure URLAUTH feature is enabled and folder names are known.","url":"https://insights.sbomify.com/CVE-2026-47085/"}