{"id":"CVE-2026-82982","title":"The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it","summary":"The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforc…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-840"],"vendor":"Nextcloud","product":"Approval","affected":["Approval >= 1.0.0 <= 3.0.0"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T20:17:25.790","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82982","references":[{"url":"https://hackerone.com/reports/3610332","label":"support@hackerone.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T19:41:50.479115Z"},"epss":0.00186,"epssPercentile":0.0848,"ingestedAt":"2026-09-18T01:33:24.271Z","slug":"CVE-2026-82982","body":"## Overview\n\nThe Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforced this check when the etag parameter was present and non-empty in the request. An attacker able to intercept and modify the approval request could omit the etag field entirely, bypassing the freshness check and approving or rejecting a file version they never reviewed.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}