{"answers":{"affected":"3 open source packages ship an affected version, including mercurial. It affects 3 products.","exploited":"There is no known exploitation of CVE-2019-3902 in the wild and no public exploit code.","fix":"Upgrade mercurial to 4.9 or later.","what":"CVE-2019-3902 is a medium-severity path traversal vulnerability in Debian Debian Linux, published on 22 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-3902 and fix it if it is affected.\n\nWhat it is: CVE-2019-3902 is a medium-severity path traversal vulnerability in Debian Debian Linux, published on 22 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2019-3902 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mercurial (PyPI): affected all versions; fixed in 4.9\n- mercurial (PyPI): affected all versions; fixed in 4.9\n- mercurial (PyPI): affected all versions; fixed in 4.9\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-2019-3902/ (Markdown: https://insights.sbomify.com/CVE-2019-3902/index.md)","id":"CVE-2019-3902","markdown":"https://insights.sbomify.com/CVE-2019-3902/index.md","name":"CVE-2019-3902","record":{"aliases":["ALPINE-CVE-2019-3902","DEBIAN-CVE-2019-3902","DLA-1764-1","GHSA-mq66-vcfc-8246","MGASA-2019-0250","PYSEC-2019-188","SUSE-SU-2020:1709-1","SUSE-SU-2020:1709-2","SUSE-SU-2020:3003-1","UBUNTU-CVE-2019-3902","openSUSE-SU-2020:0869-1","openSUSE-SU-2020:0880-1"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Mercurial version control","requires_auth":"none","summary":"Attackers can use symlinks and subrepositories to bypass path checks and write files outside the repository directory.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"mercurial","vendor":"mercurial"},{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.","ecosystems":["PyPI","SUSE:Linux Enterprise Module for Python 2 15 SP1","SUSE:Linux Enterprise Module for Python 2 15 SP2","SUSE:Linux Enterprise Software Development Kit 12 SP5","openSUSE:Leap 15.1","openSUSE:Leap 15.2"],"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":"Mercurial Path Traversal/Link Following vulnerability","id":"CVE-2019-3902","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"debian:debian_linux","products":["debian:debian_linux","redhat:enterprise_linux"],"type":"path_traversal","year":"2019"},"n_packages":8,"n_references":5,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2019-3903"},"packages":[{"ecosystem":"PyPI","fixed":["4.9"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":null,"source":"GHSA-mq66-vcfc-8246"},{"ecosystem":"PyPI","fixed":["4.9"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":"pkg:pypi/mercurial","source":"GHSA-mq66-vcfc-8246"},{"ecosystem":"PyPI","fixed":["4.9"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":"pkg:pypi/mercurial","source":"PYSEC-2019-188"},{"ecosystem":"SUSE:Linux Enterprise Module for Python 2 15 SP1","fixed":["4.5.2-3.9.44"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":"pkg:rpm/suse/mercurial\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%202%2015%20SP1","source":"SUSE-SU-2020:1709-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Python 2 15 SP2","fixed":["4.5.2-3.9.44"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":"pkg:rpm/suse/mercurial\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%202%2015%20SP2","source":"SUSE-SU-2020:1709-2"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["2.8.2-15.18.4"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":"pkg:rpm/suse/mercurial\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2020:3003-1"},{"ecosystem":"openSUSE:Leap 15.1","fixed":["4.5.2-lp151.6.3.1"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":"pkg:rpm/opensuse/mercurial\u0026distro=openSUSE%20Leap%2015.1","source":"openSUSE-SU-2020:0869-1"},{"ecosystem":"openSUSE:Leap 15.2","fixed":["4.5.2-lp152.7.3.1"],"introduced":["0"],"last_affected":[],"package":"mercurial","purl":"pkg:rpm/opensuse/mercurial\u0026distro=openSUSE%20Leap%2015.2","source":"openSUSE-SU-2020:0880-1"}],"prev":{"headline":"Race condition in kernel","id":"CVE-2019-3901"},"products":["mercurial"],"published":"2019-04-22","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"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":["The Mercurial Project"]},"summary":"Attackers can use symlinks and subrepositories to bypass path checks and write files outside the repository directory.","url":"https://insights.sbomify.com/CVE-2019-3902/"}