CVE-2026-82982

{"id": "CVE-2026-82982", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-82982", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-18T19:41:50.479115Z"}}], "cvssMetricV30": [{"type": "Secondary", "source": "support@hackerone.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "support@hackerone.com", "affectedData": [{"vendor": "Nextcloud", "product": "Approval", "versions": [{"status": "affected", "version": "1.0.0", "versionType": "semver", "lessThanOrEqual": "3.0.0"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-18T02:17:08.030", "references": [{"url": "https://hackerone.com/reports/3610332", "source": "support@hackerone.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-840"}]}], "descriptions": [{"lang": "en", "value": "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 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."}], "lastModified": "2026-09-18T20:17:25.790", "sourceIdentifier": "support@hackerone.com"}