{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-61911 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-61911 is a medium-severity vulnerability in cyrusimap Cyrus IMAP, published on 9 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-61911 and fix it if it is affected.\n\nWhat it is: CVE-2026-61911 is a medium-severity vulnerability in cyrusimap Cyrus IMAP, published on 9 Sep 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-2026-61911 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-2026-61911/ (Markdown: https://insights.sbomify.com/CVE-2026-61911/index.md)","id":"CVE-2026-61911","markdown":"https://insights.sbomify.com/CVE-2026-61911/index.md","name":"CVE-2026-61911","record":{"aliases":["DEBIAN-CVE-2026-61911","GHSA-v69j-37vj-46wc","UBUNTU-CVE-2026-61911"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Cyrus IMAP server","requires_auth":"low_privilege","summary":"An authenticated user can determine if other users' mailboxes exist or read shared annotations by observing Sieve script behavior during delivery.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"imap","vendor":"cyrus"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-497","name":"Exposure of Sensitive System Information to an Unauthorized Control Sphere"}],"description":"An issue was discovered in Cyrus IMAP before 3.12.4. There is a Sieve mailbox existence oracle. An authenticated user could install a Sieve script that probed whether another user's private mailbox existed, or read the value of shared mailbox annotations, by observing which fileinto branch fired during LMTP delivery.","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":"Information disclosure in Cyrus IMAP","id":"CVE-2026-61911","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Use after free in Cyrus IMAP","id":"CVE-2026-61915"},"packages":[],"prev":{"headline":"Missing authorization in Cyrus IMAP","id":"CVE-2026-61910"},"products":["Cyrus IMAP"],"published":"2026-09-09","related":[{"cvss_score":9.8,"headline":"Auth bypass in n/a","id":"CVE-2019-18928","kev_date_added":null,"published":"2019-11-15"},{"cvss_score":9.1,"headline":"Information disclosure in n/a","id":"CVE-2017-14230","kev_date_added":null,"published":"2017-09-10"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-33582","kev_date_added":null,"published":"2021-09-01"},{"cvss_score":7.5,"headline":"Information disclosure in n/a","id":"CVE-2015-8076","kev_date_added":null,"published":"2015-12-03"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2015-8077","kev_date_added":null,"published":"2015-12-03"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2015-8078","kev_date_added":null,"published":"2015-12-03"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"2026-09-10","vendors":["cyrusimap"]},"summary":"An authenticated user can determine if other users' mailboxes exist or read shared annotations by observing Sieve script behavior during delivery.","url":"https://insights.sbomify.com/CVE-2026-61911/"}