{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-87291 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-87291 is a medium-severity vulnerability in Oracle Java SE, published on 20 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-87291 and fix it if it is affected.\n\nWhat it is: CVE-2026-87291 is a medium-severity vulnerability in Oracle Java SE, published on 20 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-87291 in the wild and no public exploit code.\n\nAffected product: Oracle Java SE. 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-2026-87291/ (Markdown: https://insights.sbomify.com/CVE-2026-87291/index.md)","id":"CVE-2026-87291","markdown":"https://insights.sbomify.com/CVE-2026-87291/index.md","name":"CVE-2026-87291","record":{"aliases":["DEBIAN-CVE-2026-87291","GHSA-r3pr-m76q-f8wv","UBUNTU-CVE-2026-87291"],"analysis":null,"analysis_generated_by":null,"assigner":"oracle","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Vulnerability in Oracle Java SE (component: Networking).  Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and  27. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  Successful attacks of this vulnerability can result in  unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).","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":"Vulnerability in Oracle Java SE (component: Networking).","id":"CVE-2026-87291","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking).","id":"CVE-2026-87292"},"packages":[],"prev":{"headline":"Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JAXP).","id":"CVE-2026-87290"},"products":["Oracle Java SE"],"published":"2026-10-20","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-27","vendors":["Oracle Corporation"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-87291/"}