{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18743 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-18743 is a low-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 1 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-2026-18743 and fix it if it is affected.\n\nWhat it is: CVE-2026-18743 is a low-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 1 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-2026-18743 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. 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-2026-18743/ (Markdown: https://insights.sbomify.com/CVE-2026-18743/index.md)","id":"CVE-2026-18743","markdown":"https://insights.sbomify.com/CVE-2026-18743/index.md","name":"CVE-2026-18743","record":{"aliases":["AZL-98234","AZL-98565","BELL-CVE-2026-18743","DEBIAN-CVE-2026-18743","ECHO-0994-b63c-bb57","GHSA-2r56-6h49-5c5r","OESA-2026-3847","OESA-2026-3848","OESA-2026-3849","OESA-2026-3943","UBUNTU-CVE-2026-18743"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"popt command-line parsing library","requires_auth":"low_privilege","summary":"An attacker can cause denial of service in applications using popt by providing crafted configuration content that triggers heap metadata corruption.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":2.5,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-131","name":"Incorrect Calculation of Buffer Size"}],"description":"A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the `poptConfigFileToString` function reallocates memory for buffers. Successful exploitation could result in heap metadata corruption, potentially causing the affected process to become unavailable (denial of service).","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":"Popt-devel: popt-static: short realloc in poptconfigfiletostring","id":"CVE-2026-18743","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"CVE-2026-18744","id":"CVE-2026-18744"},"packages":[],"prev":{"headline":"Worksuite SaaS version prior to 6.0.14 Stored XSS via Asset Management Location and Description Fields","id":"CVE-2026-18741"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Hardened Images","Red Hat OpenShift Container Platform 4","popt"],"published":"2026-09-01","related":[],"sources":[{"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":"2026-09-08","vendors":["Red Hat","rpm-software-management"]},"summary":"An attacker can cause denial of service in applications using popt by providing crafted configuration content that triggers heap metadata corruption.","url":"https://insights.sbomify.com/CVE-2026-18743/"}