{"answers":{"affected":"3 open source packages ship an affected version, including libpython, python and python-min. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-13836 in the wild and no public exploit code.","fix":"Upgrade libpython to a fixed version for your release line: 3.10.20, 3.11.15, 3.12.13 or 3.13.11.","what":"CVE-2025-13836 is a medium-severity denial of service vulnerability in Python Python, published on 1 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-13836 and fix it if it is affected.\n\nWhat it is: CVE-2025-13836 is a medium-severity denial of service vulnerability in Python Python, published on 1 Dec 2025. 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-2025-13836 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libpython (Bitnami): affected all versions; fixed in 3.10.20, 3.11.15, 3.12.13, 3.13.11, 3.14.1\n- python (Bitnami): affected all versions; fixed in 3.10.20, 3.11.15, 3.12.13, 3.13.11, 3.14.1\n- python-min (Bitnami): affected all versions; fixed in 3.10.20, 3.11.15, 3.12.13, 3.13.11, 3.14.1\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-2025-13836/ (Markdown: https://insights.sbomify.com/CVE-2025-13836/index.md)","id":"CVE-2025-13836","markdown":"https://insights.sbomify.com/CVE-2025-13836/index.md","name":"CVE-2025-13836","record":{"aliases":["ALSA-2026:2419","AZL-109689","AZL-71264","BELL-CVE-2025-13836","BIT-libpython-2025-13836","BIT-python-2025-13836","BIT-python-min-2025-13836","CLSA-2026-1768412660","CLSA-2026-1768480470","DEBIAN-CVE-2025-13836","ECHO-f3fc-ad65-9711","GHSA-399h-rrqc-rpgv","MINI-2g48-5p3q-f6fj","MINI-c9q9-8442-rf8x","MINI-f8jp-r88j-8rfj","MINI-r259-ggrx-8x6c","MINI-vmg4-g3vv-jfq4","PSF-2025-14","RHSA-2026:2419","RHSA-2026:3897","RHSA-2026:3900","RLSA-2026:2419","UBUNTU-CVE-2025-13836","USN-7951-1"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python standard library","requires_auth":"none","summary":"A malicious server can cause a Python HTTP client to exhaust memory by sending large responses, leading to denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"PSF","cpe":[{"product":"python","vendor":"python"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.","ecosystems":["AlmaLinux:8","Bitnami","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::crb","Red Hat:rhel_eus:9.4::appstream","Red Hat:rhel_eus:9.4::crb","Red Hat:rhel_eus:9.6::appstream","Red Hat:rhel_eus:9.6::crb","Rocky Linux:8"],"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":"Excessive read buffering DoS in http.client","id":"CVE-2025-13836","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"python:python","products":["python:python"],"type":"denial_of_service","year":"2025"},"n_packages":52,"n_references":9,"next":{"headline":"Out-of-memory when loading Plist","id":"CVE-2025-13837"},"packages":[{"ecosystem":"Bitnami","fixed":["3.10.20","3.11.15","3.12.13","3.13.11","3.14.1"],"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-2025-13836"},{"ecosystem":"Bitnami","fixed":["3.10.20","3.11.15","3.12.13","3.13.11","3.14.1"],"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-2025-13836"},{"ecosystem":"Bitnami","fixed":["3.10.20","3.11.15","3.12.13","3.13.11","3.14.1"],"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-2025-13836"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12","purl":"pkg:rpm/almalinux/python3.12","source":"ALSA-2026:2419"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-debug","purl":"pkg:rpm/almalinux/python3.12-debug","source":"ALSA-2026:2419"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-devel","purl":"pkg:rpm/almalinux/python3.12-devel","source":"ALSA-2026:2419"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-idle","purl":"pkg:rpm/almalinux/python3.12-idle","source":"ALSA-2026:2419"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-libs","purl":"pkg:rpm/almalinux/python3.12-libs","source":"ALSA-2026:2419"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-rpm-macros","purl":"pkg:rpm/almalinux/python3.12-rpm-macros","source":"ALSA-2026:2419"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-test","purl":"pkg:rpm/almalinux/python3.12-test","source":"ALSA-2026:2419"},{"ecosystem":"AlmaLinux:8","fixed":["3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-tkinter","purl":"pkg:rpm/almalinux/python3.12-tkinter","source":"ALSA-2026:2419"},{"ecosystem":"Red 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Hat:enterprise_linux:8::crb","fixed":["0:3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-debug","purl":"pkg:rpm/redhat/python3.12-debug","source":"RHSA-2026:2419"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-debuginfo","purl":"pkg:rpm/redhat/python3.12-debuginfo","source":"RHSA-2026:2419"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-debugsource","purl":"pkg:rpm/redhat/python3.12-debugsource","source":"RHSA-2026:2419"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:3.12.12-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3.12-idle","purl":"pkg:rpm/redhat/python3.12-idle","source":"RHSA-2026:2419"},{"ecosystem":"Red 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Hat:rhel_eus:9.6::appstream","fixed":["0:3.12.9-1.el9_6.5"],"introduced":["0"],"last_affected":[],"package":"python3.12-debuginfo","purl":"pkg:rpm/redhat/python3.12-debuginfo","source":"RHSA-2026:3900"}],"prev":{"headline":"WordPress Arconix Shortcodes plugin \u003c= 2.1.20 - Cross Site Scripting (XSS) vulnerability","id":"CVE-2025-13835"},"products":["CPython"],"published":"2025-12-01","related":[{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2008-5031","kev_date_added":null,"published":"2008-11-10"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2014-4650","kev_date_added":null,"published":"2020-02-20"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2016-5636","kev_date_added":null,"published":"2016-09-02"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2007-4559","kev_date_added":null,"published":"2007-08-28"},{"cvss_score":8.8,"headline":"Command injection in n/a","id":"CVE-2017-17522","kev_date_added":null,"published":"2017-12-14"},{"cvss_score":8.7,"headline":"Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations","id":"CVE-2026-15308","kev_date_added":null,"published":"2026-07-09"},{"cvss_score":7.8,"headline":"Privilege escalation in n/a","id":"CVE-2019-13404","kev_date_added":null,"published":"2019-07-08"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"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":"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-03","vendors":["Python Software Foundation"]},"summary":"A malicious server can cause a Python HTTP client to exhaust memory by sending large responses, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2025-13836/"}