{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-42006 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-42006 is a medium-severity denial of service vulnerability in Dovecot Dovecot, published on 12 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-2026-42006 and fix it if it is affected.\n\nWhat it is: CVE-2026-42006 is a medium-severity denial of service vulnerability in Dovecot Dovecot, published on 12 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-2026-42006 in the wild and no public exploit code.\n\nAffected product: Dovecot Dovecot. 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-2026-42006/ (Markdown: https://insights.sbomify.com/CVE-2026-42006/index.md)","id":"CVE-2026-42006","markdown":"https://insights.sbomify.com/CVE-2026-42006/index.md","name":"CVE-2026-42006","record":{"aliases":["ALPINE-CVE-2026-42006","ALSA-2026:41905","ALSA-2026:41988","ALSA-2026:46532","AZL-86811","CLSA-2026-1779360036","CLSA-2026-1779360288","CLSA-2026-1779360319","DEBIAN-CVE-2026-42006","GHSA-h665-fh45-xq6r","RHSA-2026:41905","RHSA-2026:41988","RHSA-2026:42091","RHSA-2026:44355","RHSA-2026:44357","RHSA-2026:44373","RHSA-2026:46379","RHSA-2026:46380","RHSA-2026:46381","RHSA-2026:46532","RHSA-2026:49513","RLSA-2026:41905","RLSA-2026:41988","RLSA-2026:46532","UBUNTU-CVE-2026-42006"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"IMAP server","requires_auth":"low_privilege","summary":"An attacker can cause denial of service via excessive IMAP bracing, leading to uncontrolled memory usage in OX Dovecot Pro.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"OX","cpe":[{"product":"dovecot","vendor":"dovecot"},{"product":"dovecot","vendor":"open-xchange"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::crb","Red Hat:enterprise_linux_eus:10.0","Red Hat:rhel_aus:8.4::appstream","Red Hat:rhel_aus:8.6::appstream","Red Hat:rhel_e4s:8.8::appstream","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_e4s:9.4::appstream","Red Hat:rhel_els:7","Red Hat:rhel_eus:9.6::appstream","Red Hat:rhel_eus:9.6::crb","Red Hat:rhel_eus_long_life:8.4::appstream","Red Hat:rhel_eus_long_life:8.6::appstream","Red Hat:rhel_tus:8.8::appstream","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9"],"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":"Denial of service in OX Dovecot Pro","id":"CVE-2026-42006","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"dovecot:dovecot","products":["dovecot:dovecot"],"type":"denial_of_service","year":"2026"},"n_packages":72,"n_references":1,"next":{"headline":"Use after free in OX Dovecot CE","id":"CVE-2026-42007"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/almalinux/dovecot","source":"ALSA-2026:41988"},{"ecosystem":"AlmaLinux:10","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-devel","purl":"pkg:rpm/almalinux/dovecot-devel","source":"ALSA-2026:41988"},{"ecosystem":"AlmaLinux:10","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql","purl":"pkg:rpm/almalinux/dovecot-mysql","source":"ALSA-2026:41988"},{"ecosystem":"AlmaLinux:10","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql","purl":"pkg:rpm/almalinux/dovecot-pgsql","source":"ALSA-2026:41988"},{"ecosystem":"AlmaLinux:10","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole","purl":"pkg:rpm/almalinux/dovecot-pigeonhole","source":"ALSA-2026:41988"},{"ecosystem":"AlmaLinux:8","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/almalinux/dovecot","source":"ALSA-2026:46532"},{"ecosystem":"AlmaLinux:8","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-devel","purl":"pkg:rpm/almalinux/dovecot-devel","source":"ALSA-2026:46532"},{"ecosystem":"AlmaLinux:8","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql","purl":"pkg:rpm/almalinux/dovecot-mysql","source":"ALSA-2026:46532"},{"ecosystem":"AlmaLinux:8","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql","purl":"pkg:rpm/almalinux/dovecot-pgsql","source":"ALSA-2026:46532"},{"ecosystem":"AlmaLinux:8","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole","purl":"pkg:rpm/almalinux/dovecot-pigeonhole","source":"ALSA-2026:46532"},{"ecosystem":"AlmaLinux:9","fixed":["1:2.3.16-18.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/almalinux/dovecot","source":"ALSA-2026:41905"},{"ecosystem":"AlmaLinux:9","fixed":["1:2.3.16-18.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-devel","purl":"pkg:rpm/almalinux/dovecot-devel","source":"ALSA-2026:41905"},{"ecosystem":"AlmaLinux:9","fixed":["1:2.3.16-18.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql","purl":"pkg:rpm/almalinux/dovecot-mysql","source":"ALSA-2026:41905"},{"ecosystem":"AlmaLinux:9","fixed":["1:2.3.16-18.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql","purl":"pkg:rpm/almalinux/dovecot-pgsql","source":"ALSA-2026:41905"},{"ecosystem":"AlmaLinux:9","fixed":["1:2.3.16-18.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole","purl":"pkg:rpm/almalinux/dovecot-pigeonhole","source":"ALSA-2026:41905"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/redhat/dovecot","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-debuginfo","purl":"pkg:rpm/redhat/dovecot-debuginfo","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-debugsource","purl":"pkg:rpm/redhat/dovecot-debugsource","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-devel","purl":"pkg:rpm/redhat/dovecot-devel","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql","purl":"pkg:rpm/redhat/dovecot-mysql","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql-debuginfo","purl":"pkg:rpm/redhat/dovecot-mysql-debuginfo","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql","purl":"pkg:rpm/redhat/dovecot-pgsql","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql-debuginfo","purl":"pkg:rpm/redhat/dovecot-pgsql-debuginfo","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole","purl":"pkg:rpm/redhat/dovecot-pigeonhole","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:2.3.21-19.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole-debuginfo","purl":"pkg:rpm/redhat/dovecot-pigeonhole-debuginfo","source":"RHSA-2026:41988"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/redhat/dovecot","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-debuginfo","purl":"pkg:rpm/redhat/dovecot-debuginfo","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-debugsource","purl":"pkg:rpm/redhat/dovecot-debugsource","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql","purl":"pkg:rpm/redhat/dovecot-mysql","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql-debuginfo","purl":"pkg:rpm/redhat/dovecot-mysql-debuginfo","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql","purl":"pkg:rpm/redhat/dovecot-pgsql","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql-debuginfo","purl":"pkg:rpm/redhat/dovecot-pgsql-debuginfo","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole","purl":"pkg:rpm/redhat/dovecot-pigeonhole","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole-debuginfo","purl":"pkg:rpm/redhat/dovecot-pigeonhole-debuginfo","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/redhat/dovecot","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-debuginfo","purl":"pkg:rpm/redhat/dovecot-debuginfo","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-debugsource","purl":"pkg:rpm/redhat/dovecot-debugsource","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-devel","purl":"pkg:rpm/redhat/dovecot-devel","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql-debuginfo","purl":"pkg:rpm/redhat/dovecot-mysql-debuginfo","source":"RHSA-2026:46532"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.16-8.el8_10"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql-debuginfo","purl":"pkg:rpm/redhat/dovecot-pgsql-debuginfo","source":"RHSA-2026:46532"}],"prev":{"headline":"Insufficient input validation of internal web server","id":"CVE-2026-42005"},"products":["OX Dovecot Pro"],"published":"2026-05-12","related":[{"cvss_score":7.7,"headline":"Auth bypass in OX Dovecot Pro","id":"CVE-2026-24031","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":7.5,"headline":"Denial of service in OX Dovecot Pro","id":"CVE-2025-59032","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":7.5,"headline":"Denial of service in OX Dovecot Pro","id":"CVE-2026-27858","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":7.5,"headline":"Path traversal in n/a","id":"CVE-2021-29157","kev_date_added":null,"published":"2021-06-28"},{"cvss_score":7.5,"headline":"Null dereference in n/a","id":"CVE-2020-10957","kev_date_added":null,"published":"2020-05-18"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2020-7046","kev_date_added":null,"published":"2020-02-12"},{"cvss_score":7.5,"headline":"Null dereference in n/a","id":"CVE-2019-11494","kev_date_added":null,"published":"2019-05-08"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2026-08-03","vendors":["Open-Xchange GmbH"]},"summary":"An attacker can cause denial of service via excessive IMAP bracing, leading to uncontrolled memory usage in OX Dovecot Pro.","url":"https://insights.sbomify.com/CVE-2026-42006/"}