{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2743 exists.","fix":"No fix has been published for CVE-2026-2743 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-2743 is a critical vulnerability in SeppMail, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-2743 and fix it if it is affected.\n\nWhat it is: CVE-2026-2743 is a critical vulnerability in SeppMail, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2743 exists.\n\nAffected product: SeppMail. 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-2026-2743/ (Markdown: https://insights.sbomify.com/CVE-2026-2743/index.md)","id":"CVE-2026-2743","markdown":"https://insights.sbomify.com/CVE-2026-2743/index.md","name":"CVE-2026-2743","record":{"aliases":["GHSA-3hq3-ff7h-6mf5"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Secure email gateway","requires_auth":"none","summary":"Attackers can achieve remote code execution via arbitrary file write in the large file transfer feature of the SeppMail user web interface.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"NCSC.ch","cpe":[{"product":"seppmail","vendor":"seppmail"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y","version":"4.0"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). \n\nThis issue affects SeppMail: 15.0.2.1 and before","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"SEPPmail User Web Interface Arbitrary File Write to RCE","id":"CVE-2026-2743","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"file_upload","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-2744"},"packages":[],"prev":{"headline":"Unauthorized session creation via reserved framework path access","id":"CVE-2026-2742"},"products":["SeppMail"],"published":"2026-03-05","related":[{"cvss_score":9.5,"headline":"PDF Password CMDi","id":"CVE-2026-27441","kev_date_added":null,"published":"2026-03-04"},{"cvss_score":9.3,"headline":"zip_attachments Path Traversal","id":"CVE-2026-27442","kev_date_added":null,"published":"2026-03-04"},{"cvss_score":8.2,"headline":"S/MIME Decryption Tag Sanitization Bypass","id":"CVE-2026-27443","kev_date_added":null,"published":"2026-03-04"},{"cvss_score":7.8,"headline":"Header Email Address Parsing","id":"CVE-2026-27444","kev_date_added":null,"published":"2026-03-04"},{"cvss_score":7.8,"headline":"S/MIME Certificate Subject Whitespace","id":"CVE-2026-2748","kev_date_added":null,"published":"2026-03-04"},{"cvss_score":6.9,"headline":"PGP Signature Reflection","id":"CVE-2026-27445","kev_date_added":null,"published":"2026-03-04"}],"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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-19","vendors":["SeppMail"]},"summary":"Attackers can achieve remote code execution via arbitrary file write in the large file transfer feature of the SeppMail user web interface.","url":"https://insights.sbomify.com/CVE-2026-2743/"}