{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2019-10691 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2019-10691 is a high-severity denial of service vulnerability in Dovecot Dovecot, published on 24 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-10691 and fix it if it is affected.\n\nWhat it is: CVE-2019-10691 is a high-severity denial of service vulnerability in Dovecot Dovecot, published on 24 Apr 2019. 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-2019-10691 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-2019-10691/ (Markdown: https://insights.sbomify.com/CVE-2019-10691/index.md)","id":"CVE-2019-10691","markdown":"https://insights.sbomify.com/CVE-2019-10691/index.md","name":"CVE-2019-10691","record":{"aliases":["ALPINE-CVE-2019-10691","DEBIAN-CVE-2019-10691","GHSA-7m29-wr8r-5c2m","SUSE-SU-2019:0997-1","openSUSE-SU-2019:1312-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Dovecot mail server","requires_auth":"none","summary":"Attackers can crash the Dovecot authentication service by sending invalid UTF-8 sequences as usernames, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"dovecot","vendor":"dovecot"},{"product":"leap","vendor":"opensuse"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[],"description":"The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.","ecosystems":["SUSE:Linux Enterprise Module for Server Applications 15","openSUSE:Leap 15.0"],"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 n/a","id":"CVE-2019-10691","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"dovecot:dovecot","products":["dovecot:dovecot","opensuse:leap"],"type":"denial_of_service","year":"2019"},"n_packages":2,"n_references":5,"next":{"headline":"SQL injection in n/a","id":"CVE-2019-10692"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15","fixed":["2.3.3-4.13.1"],"introduced":["0"],"last_affected":[],"package":"dovecot23","purl":"pkg:rpm/suse/dovecot23\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015","source":"SUSE-SU-2019:0997-1"},{"ecosystem":"openSUSE:Leap 15.0","fixed":["2.3.3-lp150.11.1"],"introduced":["0"],"last_affected":[],"package":"dovecot23","purl":"pkg:rpm/opensuse/dovecot23\u0026distro=openSUSE%20Leap%2015.0","source":"openSUSE-SU-2019:1312-1"}],"prev":{"headline":"Information disclosure in n/a","id":"CVE-2019-10689"},"products":["n/a"],"published":"2019-04-24","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":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can crash the Dovecot authentication service by sending invalid UTF-8 sequences as usernames, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2019-10691/"}