{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67863 exists.","fix":"No fix has been published for CVE-2026-67863 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-67863 is a high-severity use after free vulnerability in n/a, published on 5 Aug 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-2026-67863 and fix it if it is affected.\n\nWhat it is: CVE-2026-67863 is a high-severity use after free vulnerability in n/a, published on 5 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67863 exists.\n\nAffected product: n/a. 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-2026-67863/ (Markdown: https://insights.sbomify.com/CVE-2026-67863/index.md)","id":"CVE-2026-67863","markdown":"https://insights.sbomify.com/CVE-2026-67863/index.md","name":"CVE-2026-67863","record":{"aliases":["DEBIAN-CVE-2026-67863","GHSA-j8g3-2qjc-25x2","UBUNTU-CVE-2026-67863"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"OPC UA library","requires_auth":"none","summary":"A remote attacker can cause a denial of service in open62541 by triggering a use-after-free in the local MonitoredItem callback path.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UA_Subscription_localPublish continues to use the current UA_Notification after a callback invokes UA_Server_deleteMonitoredItem for the current local MonitoredItem. This allows a remote attacker to cause a denial of service.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Use after free in n/a","id":"CVE-2026-67863","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Denial of service in n/a","id":"CVE-2026-67864"},"packages":[],"prev":{"headline":"Denial of service in n/a","id":"CVE-2026-67862"},"products":["n/a"],"published":"2026-08-05","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-07","vendors":["n/a"]},"summary":"A remote attacker can cause a denial of service in open62541 by triggering a use-after-free in the local MonitoredItem callback path.","url":"https://insights.sbomify.com/CVE-2026-67863/"}