{"id":"CVE-2026-45267","state":"PUBLISHED","title":"Nextcloud: Missing permission check for from submissions","description":"Nextcloud is an open source content collaboration platform. Prior to version 5.2.6, a missing permissions check allowed users to request reading form submissions of other users. This issue has been patched in version 5.2.6.","publishedAt":"2026-06-01T16:40:18.592Z","updatedAt":"2026-06-01T18:12:23.278Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["nextcloud security-advisories"],"affected":[{"vendor":"nextcloud","product":"security-advisories","versions":[{"version":"< 5.2.6","status":"affected"}]}],"references":["https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f","https://github.com/nextcloud/forms/pull/3269","https://hackerone.com/reports/3628817"],"weaknesses":["CWE-200","CWE-862"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45267.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45267","state":"PUBLISHED","datePublished":"2026-06-01T16:40:18.592Z","dateUpdated":"2026-06-01T18:12:23.278Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-11T18:41:13.156Z"},"containers":{"cna":{"title":"Nextcloud: Missing permission check for from submissions","descriptions":[{"lang":"en","value":"Nextcloud is an open source content collaboration platform. Prior to version 5.2.6, a missing permissions check allowed users to request reading form submissions of other users. This issue has been patched in version 5.2.6."}],"affected":[{"vendor":"nextcloud","product":"security-advisories","versions":[{"version":"< 5.2.6","status":"affected"}]}],"references":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f","name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/nextcloud/forms/pull/3269","name":"https://github.com/nextcloud/forms/pull/3269","tags":["x_refsource_MISC"]},{"url":"https://hackerone.com/reports/3628817","name":"https://hackerone.com/reports/3628817","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-01T16:40:18.592Z"},"source":{"advisory":"GHSA-r4gh-f8x6-m55f","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-01T18:12:13.355883Z","id":"CVE-2026-45267","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-01T18:12:23.278Z"}}]}}}