{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-97666 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-97666 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-97666 is a medium-severity vulnerability in Sonatype Nexus Repository 3, published on 15 Oct 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-2026-97666 and fix it if it is affected.\n\nWhat it is: CVE-2026-97666 is a medium-severity vulnerability in Sonatype Nexus Repository 3, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-97666 in the wild and no public exploit code.\n\nAffected product: Sonatype Nexus Repository 3. 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-2026-97666/ (Markdown: https://insights.sbomify.com/CVE-2026-97666/index.md)","id":"CVE-2026-97666","markdown":"https://insights.sbomify.com/CVE-2026-97666/index.md","name":"CVE-2026-97666","record":{"aliases":["GHSA-rchx-54gw-m94r"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Nexus Repository 3","requires_auth":"none","summary":"Unauthenticated attackers can determine the presence of specific Java classes in Sonatype Nexus Repository 3 via unsafe reflection in the ExtDirect endpoint.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Sonatype","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-470","name":"Use of Externally-Controlled Input to Select Classes or Code"}],"description":"Sonatype Nexus Repository 3 allows an unauthenticated remote attacker to supply attacker-controlled input to a Java class loading call through an ExtDirect endpoint. This allows the attacker to learn whether specific classes are present in the application. The issue does not by itself allow code execution.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Nexus Repository 3 - Unsafe Reflection in ExtDirect Repository Endpoint","id":"CVE-2026-97666","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Nexus Repository 3 - Stored Cross-Site Scripting in Browse UI","id":"CVE-2026-97667"},"packages":[],"prev":{"headline":"Nexus Repository 3 - Missing Authorization on NuGet Symbol Package Upload","id":"CVE-2026-97665"},"products":["Nexus Repository 3"],"published":"2026-10-15","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":"2026-10-15","vendors":["Sonatype"]},"summary":"Unauthenticated attackers can determine the presence of specific Java classes in Sonatype Nexus Repository 3 via unsafe reflection in the ExtDirect endpoint.","url":"https://insights.sbomify.com/CVE-2026-97666/"}