{"answers":{"affected":"3 open source packages ship an affected version, including github.com/axllent/mailpit. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45711 exists.","fix":"Upgrade github.com/axllent/mailpit to 1.30.0 or later.","what":"CVE-2026-45711 is a medium-severity path traversal vulnerability in axllent mailpit, published on 20 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-45711 and fix it if it is affected.\n\nWhat it is: CVE-2026-45711 is a medium-severity path traversal vulnerability in axllent mailpit, published on 20 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45711 exists.\n\nAffected packages and fixed versions:\n- github.com/axllent/mailpit (Go): affected all versions; fixed in 1.30.0\n- github.com/axllent/mailpit (Go): affected all versions; fixed in 1.30.0\n- github.com/axllent/mailpit (Go): affected all versions; fixed in 1.30.0\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-2026-45711/ (Markdown: https://insights.sbomify.com/CVE-2026-45711/index.md)","id":"CVE-2026-45711","markdown":"https://insights.sbomify.com/CVE-2026-45711/index.md","name":"CVE-2026-45711","record":{"aliases":["GHSA-qx5x-85p8-vg4j","GO-2026-5599"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Mailpit email testing tool","requires_auth":"none","summary":"A malicious server can exploit path traversal in Mailpit's dump command to write arbitrary files outside the intended directory, potentially leading to code execution.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"mailpit","vendor":"axllent"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-829","name":"Inclusion of Functionality from Untrusted Control Sphere"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Mailpit is an email testing tool and API for developers. Prior to version 1.30.0, the mailpit dump --http \u003cbase-url\u003e \u003cout-dir\u003e sub-command downloads every message from a remote Mailpit instance and writes each one as \u003cid\u003e.eml inside the user-supplied output directory. The message ID field is taken verbatim from the JSON response of the remote server and concatenated into the output path with path.Join, which silently normalizes `..` segments. A malicious HTTP server impersonating Mailpit can therefore make mailpit dump write attacker-controlled bytes to any path the running user can write, fully outside the intended output directory. Version 1.30.0 contains a patch.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Mailpit: Path traversal \u0026 arbitrary file write in mailpit dump --http via attacker-controlled message IDs","id":"CVE-2026-45711","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Mailpit: Concurrent map read \u0026 write in proxy CSS rewriter - remote unauth crash (fatal error: concurrent map read and map write)","id":"CVE-2026-45712"},"packages":[{"ecosystem":"Go","fixed":["1.30.0"],"introduced":["0"],"last_affected":[],"package":"github.com/axllent/mailpit","purl":null,"source":"GHSA-qx5x-85p8-vg4j"},{"ecosystem":"Go","fixed":["1.30.0"],"introduced":["0"],"last_affected":[],"package":"github.com/axllent/mailpit","purl":"pkg:golang/github.com/axllent/mailpit","source":"GHSA-qx5x-85p8-vg4j"},{"ecosystem":"Go","fixed":["1.30.0"],"introduced":["0"],"last_affected":[],"package":"github.com/axllent/mailpit","purl":"pkg:golang/github.com/axllent/mailpit","source":"GO-2026-5599"}],"prev":{"headline":"Mailpit has an incomplete fix for GHSA-6jxm: HTML check still permits SSRF to private/loopback/IMDS via missing IP-filter dialer","id":"CVE-2026-45709"},"products":["mailpit"],"published":"2026-07-20","related":[{"cvss_score":7.5,"headline":"Mailpit: Unauthenticated remote memory-exhaustion DoS via unlimited SMTP DATA and /api/v1/send body sizes","id":"CVE-2026-45713","kev_date_added":null,"published":"2026-07-20"},{"cvss_score":6.5,"headline":"Mailpit is vulnerable to Cross-Site WebSocket Hijacking (CSWSH) allowing unauthenticated access to emails","id":"CVE-2026-22689","kev_date_added":null,"published":"2026-01-10"},{"cvss_score":5.9,"headline":"Mailpit: Concurrent map read \u0026 write in proxy CSS rewriter - remote unauth crash (fatal error: concurrent map read and map write)","id":"CVE-2026-45712","kev_date_added":null,"published":"2026-07-20"},{"cvss_score":5.8,"headline":"Mailpit has an incomplete fix for GHSA-6jxm: HTML check still permits SSRF to private/loopback/IMDS via missing IP-filter dialer","id":"CVE-2026-45709","kev_date_added":null,"published":"2026-07-20"},{"cvss_score":5.8,"headline":"Mailpit is Vulnerable to Server-Side Request Forgery (SSRF) via Link Check API","id":"CVE-2026-27808","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":5.8,"headline":"Mailpit Vulnerable to Server-Side Request Forgery (SSRF) via HTML Check API","id":"CVE-2026-23845","kev_date_added":null,"published":"2026-01-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-21","vendors":["axllent"]},"summary":"A malicious server can exploit path traversal in Mailpit's dump command to write arbitrary files outside the intended directory, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-45711/"}