{"answers":{"affected":"3 open source packages ship an affected version, including libpython, python and python-min.","exploited":"There is no known exploitation of CVE-2026-3298 in the wild and no public exploit code.","fix":"Upgrade libpython to a fixed version for your release line: 3.11.16, 3.12.14, 3.13.14 or 3.14.5.","what":"CVE-2026-3298 is a high-severity memory corruption vulnerability in CPython, published on 21 Apr 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-2026-3298 and fix it if it is affected.\n\nWhat it is: CVE-2026-3298 is a high-severity memory corruption vulnerability in CPython, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-3298 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libpython (Bitnami): affected all versions; fixed in 3.11.16, 3.12.14, 3.13.14, 3.14.5\n- python (Bitnami): affected all versions; fixed in 3.11.16, 3.12.14, 3.13.14, 3.14.5\n- python-min (Bitnami): affected all versions; fixed in 3.11.16, 3.12.14, 3.13.14, 3.14.5\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-2026-3298/ (Markdown: https://insights.sbomify.com/CVE-2026-3298/index.md)","id":"CVE-2026-3298","markdown":"https://insights.sbomify.com/CVE-2026-3298/index.md","name":"CVE-2026-3298","record":{"aliases":["BIT-libpython-2026-3298","BIT-python-2026-3298","BIT-python-min-2026-3298","GHSA-3p9c-22jr-wq4x","MINI-6v47-g9m7-fc8f","MINI-fh4r-jmv4-58cj","MINI-p2h8-6qw2-33vg","MINI-vxfc-h69x-f5fh","MINI-xj58-qhf9-9m2x","PSF-0000-CVE-2026-3298","PSF-2026-20","ROOT-OS-ALPINE-320-CVE-2026-3298"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python standard library","requires_auth":"none","summary":"An out-of-bounds write in Python's Windows asyncio module allows attackers to cause memory corruption or execute arbitrary code.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"PSF","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"The method \"sock_recvfrom_into()\" of \"asyncio.ProacterEventLoop\" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. This allowed for an out-of-bounds buffer write if data was larger than the buffer size. Non-Windows platforms are not affected.","ecosystems":["Bitnami"],"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":"Out-of-bounds write in Windows asyncio.ProacterEventLoop.sock_recvfrom_into() when using nbytes","id":"CVE-2026-3298","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":3,"n_references":8,"next":{"headline":"WP YouTube Lyte \u003c= 1.7.29 - Authenticated (Contributor+) Stored Cross-Site Scripting via lyte Shortcode","id":"CVE-2026-3299"},"packages":[{"ecosystem":"Bitnami","fixed":["3.11.16","3.12.14","3.13.14","3.14.5"],"introduced":["0","3.12.0","3.13.0","3.14.0"],"last_affected":[],"package":"libpython","purl":"pkg:bitnami/libpython","source":"BIT-libpython-2026-3298"},{"ecosystem":"Bitnami","fixed":["3.11.16","3.12.14","3.13.14","3.14.5"],"introduced":["0","3.12.0","3.13.0","3.14.0"],"last_affected":[],"package":"python","purl":"pkg:bitnami/python","source":"BIT-python-2026-3298"},{"ecosystem":"Bitnami","fixed":["3.11.16","3.12.14","3.13.14","3.14.5"],"introduced":["0","3.12.0","3.13.0","3.14.0"],"last_affected":[],"package":"python-min","purl":"pkg:bitnami/python-min","source":"BIT-python-min-2026-3298"}],"prev":{"headline":"Cross-site scripting in Page Builder: Pagelayer – Drag and Drop website builder","id":"CVE-2026-3297"},"products":["CPython"],"published":"2026-04-21","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":"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":"2026-08-13","vendors":["Python Software Foundation"]},"summary":"An out-of-bounds write in Python's Windows asyncio module allows attackers to cause memory corruption or execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2026-3298/"}