{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-89161 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-89161 is a high-severity use after free vulnerability in PCRE2, published on 11 Sep 2026. 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-2026-89161 and fix it if it is affected.\n\nWhat it is: CVE-2026-89161 is a high-severity use after free vulnerability in PCRE2, published on 11 Sep 2026. 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-2026-89161 in the wild and no public exploit code.\n\nAffected product: PCRE2. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-89161/ (Markdown: https://insights.sbomify.com/CVE-2026-89161/index.md)","id":"CVE-2026-89161","markdown":"https://insights.sbomify.com/CVE-2026-89161/index.md","name":"CVE-2026-89161","record":{"aliases":["ALPINE-CVE-2026-89161","AZL-100053","AZL-101766","AZL-101790","AZL-101802","AZL-101823","BELL-CVE-2026-89161","DEBIAN-CVE-2026-89161","ECHO-4e33-89ce-0def","GHSA-7g92-94jm-fx5f","MINI-6m6x-f6qr-qxxm","ROOT-OS-ALPINE-315-CVE-2026-89161","UBUNTU-CVE-2026-89161"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PCRE2 regex library","requires_auth":"none","summary":"A use-after-free vulnerability in PCRE2 allows attackers to execute arbitrary code or cause denial of service via crafted regex patterns.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"pcre2","vendor":"pcre"}],"cvss":{"score":7.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-590","name":"Free of Memory not on the Heap"}],"description":"In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur.","ecosystems":[],"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":"Use after free in PCRE2","id":"CVE-2026-89161","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Information disclosure in PCRE2","id":"CVE-2026-89162"},"packages":[],"prev":{"headline":"Memory corruption in PCRE2","id":"CVE-2026-89160"},"products":["PCRE2"],"published":"2026-09-11","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-8786","kev_date_added":null,"published":"2017-05-05"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-8399","kev_date_added":null,"published":"2017-05-01"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2022-41409","kev_date_added":null,"published":"2023-07-18"},{"cvss_score":6.9,"headline":"PCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCS","id":"CVE-2025-58050","kev_date_added":null,"published":"2025-08-27"},{"cvss_score":6.5,"headline":"Integer overflow in PCRE2","id":"CVE-2026-89158","kev_date_added":null,"published":"2026-09-11"},{"cvss_score":5.7,"headline":"Memory corruption in PCRE2","id":"CVE-2026-89157","kev_date_added":null,"published":"2026-09-11"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-09-11","vendors":["PCRE"]},"summary":"A use-after-free vulnerability in PCRE2 allows attackers to execute arbitrary code or cause denial of service via crafted regex patterns.","url":"https://insights.sbomify.com/CVE-2026-89161/"}