{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-42007 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-42007 is a critical use after free vulnerability in Open-Xchange GmbH OX Dovecot CE, published on 28 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-42007 and fix it if it is affected.\n\nWhat it is: CVE-2026-42007 is a critical use after free vulnerability in Open-Xchange GmbH OX Dovecot CE, published on 28 Aug 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-2026-42007 in the wild and no public exploit code.\n\nAffected product: Open-Xchange GmbH OX Dovecot CE. 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-2026-42007/ (Markdown: https://insights.sbomify.com/CVE-2026-42007/index.md)","id":"CVE-2026-42007","markdown":"https://insights.sbomify.com/CVE-2026-42007/index.md","name":"CVE-2026-42007","record":{"aliases":["ALPINE-CVE-2026-42007","AZL-98298","CLSA-2026-1792596933","CLSA-2026-1792753135","CLSA-2026-1792753365","CLSA-2026-1792764227","CLSA-2026-1792764393","DEBIAN-CVE-2026-42007","GHSA-9h72-j5f4-5cpc","UBUNTU-CVE-2026-42007"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Dovecot mail server","requires_auth":"low_privilege","summary":"Authenticated attackers can trigger a use-after-free via Sieve scripts to cause memory corruption, potentially leading to arbitrary code execution or crashes.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"OX","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"An attacker that has valid credentials can use a Sieve script with the editheader extension to trigger a use-after-free in the mail editing code, and to write memory contents beyond the intended buffer into the delivered mail. This causes memory leak and opportunity to do memory corruption during mail delivery, which can crash the delivery process and may allow execution of arbitrary code in the context of that process. Disable the Sieve editheader extension. Update to non-vulnerable version. No publicly available exploits are known.","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 OX Dovecot CE","id":"CVE-2026-42007","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Auth bypass in OX Dovecot CE","id":"CVE-2026-42008"},"packages":[],"prev":{"headline":"Denial of service in OX Dovecot Pro","id":"CVE-2026-42006"},"products":["OX Dovecot CE","OX Dovecot Pro"],"published":"2026-08-28","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":"2026-08-28","vendors":["Open-Xchange GmbH"]},"summary":"Authenticated attackers can trigger a use-after-free via Sieve scripts to cause memory corruption, potentially leading to arbitrary code execution or crashes.","url":"https://insights.sbomify.com/CVE-2026-42007/"}