{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18238 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-18238 is a medium-severity memory corruption vulnerability in The Tcpdump Group libpcap, published on 5 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-18238 and fix it if it is affected.\n\nWhat it is: CVE-2026-18238 is a medium-severity memory corruption vulnerability in The Tcpdump Group libpcap, published on 5 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-18238 in the wild and no public exploit code.\n\nAffected product: The Tcpdump Group libpcap. 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-2026-18238/ (Markdown: https://insights.sbomify.com/CVE-2026-18238/index.md)","id":"CVE-2026-18238","markdown":"https://insights.sbomify.com/CVE-2026-18238/index.md","name":"CVE-2026-18238","record":{"aliases":["AZL-99729","AZL-99927","DEBIAN-CVE-2026-18238","ECHO-bc26-fe28-c8e1","GHSA-2xr5-28gv-34j3","UBUNTU-CVE-2026-18238"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"libpcap library","requires_auth":"low_privilege","summary":"A malicious RPCAP server can trigger an out-of-bounds read in libpcap, potentially leaking memory or causing a crash.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Tcpdump","cpe":[],"cvss":{"score":5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-1288","name":"Improper Validation of Consistency within Input"},{"id":"CWE-126","name":"Buffer Over-read"}],"description":"The rpcap client code that processes a RPCAP_MSG_PACKET message received from the server incorrectly validates its headers.  A malicious server can send a crafted message and cause the client to treat up to 20 bytes of the client process memory beyond the end of the buffer as if it was a part of the captured packet.","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":"OOBR in rpcap client in libpcap before 1.10.7","id":"CVE-2026-18238","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"HP DesignJet T3500 - Potential Cross-Site Scripting (XSS)","id":"CVE-2026-18243"},"packages":[],"prev":{"headline":"Google-ADK Continuation Forgery","id":"CVE-2026-18236"},"products":["libpcap"],"published":"2026-09-05","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-08","vendors":["The Tcpdump Group"]},"summary":"A malicious RPCAP server can trigger an out-of-bounds read in libpcap, potentially leaking memory or causing a crash.","url":"https://insights.sbomify.com/CVE-2026-18238/"}