{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-66091 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-66091 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-66091 is a medium-severity vulnerability in Apereo Foundation openEQUELLA, published on 29 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-66091 and fix it if it is affected.\n\nWhat it is: CVE-2026-66091 is a medium-severity vulnerability in Apereo Foundation openEQUELLA, published on 29 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-66091 in the wild and no public exploit code.\n\nAffected product: Apereo Foundation openEQUELLA. 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-2026-66091/ (Markdown: https://insights.sbomify.com/CVE-2026-66091/index.md)","id":"CVE-2026-66091","markdown":"https://insights.sbomify.com/CVE-2026-66091/index.md","name":"CVE-2026-66091","record":{"aliases":["GHSA-gj26-grcq-vm8j","GHSA-mxj9-pmpw-j4xw"],"analysis":null,"analysis_generated_by":null,"assigner":"MON-CSIRT","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-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"In openEQUELLA before 2026.1, the GET /api/userquery/userinfobackup endpoint performs no authentication or authorisation check. An unauthenticated attacker who supplies another user's uniqueId can retrieve that user's stored personal details (username, first name, last name and email address) within the same institution.","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":"Unauthenticated IDOR Enables Disclosure of Other Users’ last-known details","id":"CVE-2026-66091","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Stored XSS in pre-login notice via reachable legacy logon route","id":"CVE-2026-66092"},"packages":[],"prev":{"headline":"XML External Entity (XXE) Injection in Metadata Field Allows Arbitrary File Read","id":"CVE-2026-66090"},"products":["openEQUELLA"],"published":"2026-10-29","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":"2026-10-29","vendors":["Apereo Foundation"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-66091/"}