{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-12043 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-12043 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-12043 is a high-severity use after free vulnerability in aws-c-http, published on 12 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-12043 and fix it if it is affected.\n\nWhat it is: CVE-2026-12043 is a high-severity use after free vulnerability in aws-c-http, published on 12 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-12043 in the wild and no public exploit code.\n\nAffected product: aws-c-http. 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-2026-12043/ (Markdown: https://insights.sbomify.com/CVE-2026-12043/index.md)","id":"CVE-2026-12043","markdown":"https://insights.sbomify.com/CVE-2026-12043/index.md","name":"CVE-2026-12043","record":{"aliases":["GHSA-rmjr-3qpm-vh98"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"AWS HTTP library","requires_auth":"none","summary":"A remote attacker can trigger a heap double-free in the AWS Common Runtime HTTP library via crafted HTTP/2 frames, potentially leading to arbitrary code execution on client applications.","user_interaction":"required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-415","name":"Double Free"}],"description":"Improper handling of HPACK dynamic table size updates in the AWS Common Runtime aws-c-http library might allow a remote threat actor operating a server to cause memory corruption on a connecting client application, potentially leading to arbitrary code execution, via a crafted sequence of HTTP/2 HEADERS frames.\n\nTo remediate this issue, users should upgrade to aws-c-http version 0.11.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Heap double-free in AWS Common Runtime aws-c-http","id":"CVE-2026-12043","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"pgAdmin 4: SQL injection in COMMENT ON ... IS '\u003cdescription\u003e' rendering across dialog templates","id":"CVE-2026-12044"},"packages":[],"prev":{"headline":"WP2Social Auto Publish \u003c= 2.4.12 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'pages' Parameter","id":"CVE-2026-12042"},"products":["aws-c-http"],"published":"2026-06-12","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":"total"},"state":"PUBLISHED","updated":"2026-06-12","vendors":["AWS"]},"summary":"A remote attacker can trigger a heap double-free in the AWS Common Runtime HTTP library via crafted HTTP/2 frames, potentially leading to arbitrary code execution on client applications.","url":"https://insights.sbomify.com/CVE-2026-12043/"}