{"answers":{"affected":"3 open source packages ship an affected version, including libpython, python and python-min.","exploited":"There is no known exploitation of CVE-2026-87910 in the wild and no public exploit code.","fix":"Upgrade libpython to a fixed version for your release line: 3.10.22, 3.11.17, 3.12.15 or 3.13.16.","what":"CVE-2026-87910 is a medium-severity path traversal vulnerability in CPython, published on 11 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-87910 and fix it if it is affected.\n\nWhat it is: CVE-2026-87910 is a medium-severity path traversal vulnerability in CPython, published on 11 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-87910 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libpython (Bitnami): affected all versions; fixed in 3.10.22, 3.11.17, 3.12.15, 3.13.16, 3.14.9\n- python (Bitnami): affected all versions; fixed in 3.10.22, 3.11.17, 3.12.15, 3.13.16, 3.14.9\n- python-min (Bitnami): affected all versions; fixed in 3.10.22, 3.11.17, 3.12.15, 3.13.16, 3.14.9\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-2026-87910/ (Markdown: https://insights.sbomify.com/CVE-2026-87910/index.md)","id":"CVE-2026-87910","markdown":"https://insights.sbomify.com/CVE-2026-87910/index.md","name":"CVE-2026-87910","record":{"aliases":["ALPINE-CVE-2026-87910","AZL-103383","BELL-CVE-2026-87910","BIT-libpython-2026-87910","BIT-python-2026-87910","BIT-python-min-2026-87910","DEBIAN-CVE-2026-87910","ECHO-af90-15a4-1b7e","GHSA-rj44-3777-mh5x","MINI-8gcr-56pr-mmjr","MINI-q4r2-pmq6-qh9w","MINI-w8xr-37vc-mm3j","MINI-x6mg-xc97-76hc","PSF-2026-40","RHSA-2026:67574","RHSA-2026:67575","RHSA-2026:67606","RHSA-2026:67607","UBUNTU-CVE-2026-87910"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Python tarfile library","requires_auth":"low_privilege","summary":"Attackers can bypass extraction filters in Python's tarfile module to write files to arbitrary locations, potentially leading to code execution.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"PSF","cpe":[],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"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":"When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.","ecosystems":["Bitnami","Red Hat:hummingbird:1"],"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":"tarfile hardlink fallback ignores custom extraction filter rejection via None","id":"CVE-2026-87910","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":33,"n_references":11,"next":{"headline":"Command injection in AWS Labs postgres MCP Server","id":"CVE-2026-87911"},"packages":[{"ecosystem":"Bitnami","fixed":["3.10.22","3.11.17","3.12.15","3.13.16","3.14.9"],"introduced":["0","3.11.0","3.12.0","3.13.0","3.14.0"],"last_affected":[],"package":"libpython","purl":"pkg:bitnami/libpython","source":"BIT-libpython-2026-87910"},{"ecosystem":"Bitnami","fixed":["3.10.22","3.11.17","3.12.15","3.13.16","3.14.9"],"introduced":["0","3.11.0","3.12.0","3.13.0","3.14.0"],"last_affected":[],"package":"python","purl":"pkg:bitnami/python","source":"BIT-python-2026-87910"},{"ecosystem":"Bitnami","fixed":["3.10.22","3.11.17","3.12.15","3.13.16","3.14.9"],"introduced":["0","3.11.0","3.12.0","3.13.0","3.14.0"],"last_affected":[],"package":"python-min","purl":"pkg:bitnami/python-min","source":"BIT-python-min-2026-87910"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.10.21-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.10","purl":"pkg:rpm/redhat/python3.10","source":"RHSA-2026:67574"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.10.21-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.10-debug","purl":"pkg:rpm/redhat/python3.10-debug","source":"RHSA-2026:67574"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.10.21-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.10-devel","purl":"pkg:rpm/redhat/python3.10-devel","source":"RHSA-2026:67574"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.10.21-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.10-idle","purl":"pkg:rpm/redhat/python3.10-idle","source":"RHSA-2026:67574"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.10.21-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.10-libs","purl":"pkg:rpm/redhat/python3.10-libs","source":"RHSA-2026:67574"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.10.21-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.10-test","purl":"pkg:rpm/redhat/python3.10-test","source":"RHSA-2026:67574"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.10.21-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.10-tkinter","purl":"pkg:rpm/redhat/python3.10-tkinter","source":"RHSA-2026:67574"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.11.16-1.3.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.11","purl":"pkg:rpm/redhat/python3.11","source":"RHSA-2026:67575"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.11.16-1.3.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.11-debug","purl":"pkg:rpm/redhat/python3.11-debug","source":"RHSA-2026:67575"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.11.16-1.3.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.11-devel","purl":"pkg:rpm/redhat/python3.11-devel","source":"RHSA-2026:67575"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.11.16-1.3.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.11-idle","purl":"pkg:rpm/redhat/python3.11-idle","source":"RHSA-2026:67575"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.11.16-1.3.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.11-libs","purl":"pkg:rpm/redhat/python3.11-libs","source":"RHSA-2026:67575"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.11.16-1.3.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.11-test","purl":"pkg:rpm/redhat/python3.11-test","source":"RHSA-2026:67575"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.11.16-1.3.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.11-tkinter","purl":"pkg:rpm/redhat/python3.11-tkinter","source":"RHSA-2026:67575"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12.14-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.12","purl":"pkg:rpm/redhat/python3.12","source":"RHSA-2026:67607"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12.14-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.12-debug","purl":"pkg:rpm/redhat/python3.12-debug","source":"RHSA-2026:67607"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12.14-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.12-devel","purl":"pkg:rpm/redhat/python3.12-devel","source":"RHSA-2026:67607"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12.14-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.12-idle","purl":"pkg:rpm/redhat/python3.12-idle","source":"RHSA-2026:67607"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12.14-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.12-libs","purl":"pkg:rpm/redhat/python3.12-libs","source":"RHSA-2026:67607"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12.14-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.12-test","purl":"pkg:rpm/redhat/python3.12-test","source":"RHSA-2026:67607"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12.14-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.12-tkinter","purl":"pkg:rpm/redhat/python3.12-tkinter","source":"RHSA-2026:67607"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13","purl":"pkg:rpm/redhat/python3.13","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-debug","purl":"pkg:rpm/redhat/python3.13-debug","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-devel","purl":"pkg:rpm/redhat/python3.13-devel","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-freethreading","purl":"pkg:rpm/redhat/python3.13-freethreading","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-freethreading-debug","purl":"pkg:rpm/redhat/python3.13-freethreading-debug","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-idle","purl":"pkg:rpm/redhat/python3.13-idle","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-libs","purl":"pkg:rpm/redhat/python3.13-libs","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-test","purl":"pkg:rpm/redhat/python3.13-test","source":"RHSA-2026:67606"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.13.15-1.2.hum1"],"introduced":["0"],"last_affected":[],"package":"python3.13-tkinter","purl":"pkg:rpm/redhat/python3.13-tkinter","source":"RHSA-2026:67606"}],"prev":{"headline":"Command injection in WP Photo Album Plus","id":"CVE-2026-87909"},"products":["CPython"],"published":"2026-09-11","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2026-10-22","vendors":["Python Software Foundation"]},"summary":"Attackers can bypass extraction filters in Python's tarfile module to write files to arbitrary locations, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-87910/"}