{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-10958 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-10958 is a medium-severity use after free vulnerability in Dovecot Dovecot, published on 18 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-10958 and fix it if it is affected.\n\nWhat it is: CVE-2020-10958 is a medium-severity use after free vulnerability in Dovecot Dovecot, published on 18 May 2020. 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-2020-10958 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-2020-10958/ (Markdown: https://insights.sbomify.com/CVE-2020-10958/index.md)","id":"CVE-2020-10958","markdown":"https://insights.sbomify.com/CVE-2020-10958/index.md","name":"CVE-2020-10958","record":{"aliases":["ALPINE-CVE-2020-10958","DEBIAN-CVE-2020-10958","GHSA-v4pj-8r82-6phx","UBUNTU-CVE-2020-10958"],"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":"An unauthenticated attacker can crash the Dovecot submission or LMTP services by sending a crafted message with many newlines.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"dovecot","vendor":"dovecot"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.0/AC:L/AV:N/A:L/C:N/I:N/PR:N/S:U/UI:N","version":"3.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.","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":"Use after free in n/a","id":"CVE-2020-10958","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"dovecot:dovecot","products":["dovecot:dovecot"],"type":"use_after_free","year":"2020"},"n_packages":0,"n_references":10,"next":{"headline":"MediaWiki Open Redirect vulnerability","id":"CVE-2020-10959"},"packages":[],"prev":{"headline":"Null dereference in n/a","id":"CVE-2020-10957"},"products":["n/a"],"published":"2020-05-18","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":"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"An unauthenticated attacker can crash the Dovecot submission or LMTP services by sending a crafted message with many newlines.","url":"https://insights.sbomify.com/CVE-2020-10958/"}