{"id":"CVE-2026-68493","title":"After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.","summary":"After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-639"],"vendor":"Nextcloud","product":"Server","affected":["Server >= 32.0.0 <= 34.0.0"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T20:17:21.037","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68493","references":[{"url":"https://hackerone.com/reports/3484601","label":"support@hackerone.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68493.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-68493"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68493"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T19:40:01.086889Z"},"epss":0.00227,"epssPercentile":0.13329,"ingestedAt":"2026-09-18T01:33:24.272Z","slug":"CVE-2026-68493","body":"## Overview\n\nAfter guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68493.json)","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}