{"id":"CVE-2026-52783","state":"PUBLISHED","title":"OpenProject: Information Disclosure (cleartext storage of data) on localhost through memcached via Others \"storage.<id>.httpx_access_token\" leads to Sensitive Data Exposure","description":"OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, OpenProject's Storages module writes the OneDrive/SharePoint userless OAuth access_token plaintext to Rails.cache under the deterministic key storage.<id>.httpx_access_token, repopulated continuously by an hourly cron and every userless-OAuth call site (see Write cadence). None of the three allowed cache backends (file_store, memcache, redis) encrypts at rest. An attacker with read access to the cache backend recovers the Azure-AD application-tier bearer with an anonymous get over the memcached binary protocol (or the equivalent against Redis). This vulnerability is fixed in 17.3.3 and 17.4.1.","publishedAt":"2026-06-26T18:57:58.860Z","updatedAt":"2026-06-29T13:17:51.621Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["opf openproject"],"affected":[{"vendor":"opf","product":"openproject","versions":[{"version":"< 17.3.3","status":"affected"},{"version":">= 17.4.0, < 17.4.1","status":"affected"}]}],"references":["https://github.com/opf/openproject/security/advisories/GHSA-h83w-5q5x-pq27"],"weaknesses":["CWE-313"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/52xxx/CVE-2026-52783.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52783","state":"PUBLISHED","datePublished":"2026-06-26T18:57:58.860Z","dateUpdated":"2026-06-29T13:17:51.621Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-08T17:13:43.065Z"},"containers":{"cna":{"title":"OpenProject: Information Disclosure (cleartext storage of data) on localhost through memcached via Others \"storage.<id>.httpx_access_token\" leads to Sensitive Data Exposure","descriptions":[{"lang":"en","value":"OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, OpenProject's Storages module writes the OneDrive/SharePoint userless OAuth access_token plaintext to Rails.cache under the deterministic key storage.<id>.httpx_access_token, repopulated continuously by an hourly cron and every userless-OAuth call site (see Write cadence). None of the three allowed cache backends (file_store, memcache, redis) encrypts at rest. An attacker with read access to the cache backend recovers the Azure-AD application-tier bearer with an anonymous get over the memcached binary protocol (or the equivalent against Redis). This vulnerability is fixed in 17.3.3 and 17.4.1."}],"affected":[{"vendor":"opf","product":"openproject","versions":[{"version":"< 17.3.3","status":"affected"},{"version":">= 17.4.0, < 17.4.1","status":"affected"}]}],"references":[{"url":"https://github.com/opf/openproject/security/advisories/GHSA-h83w-5q5x-pq27","name":"https://github.com/opf/openproject/security/advisories/GHSA-h83w-5q5x-pq27","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-313","lang":"en","description":"CWE-313: Cleartext Storage in a File or on Disk","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-26T18:57:58.860Z"},"source":{"advisory":"GHSA-h83w-5q5x-pq27","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-29T13:17:22.766027Z","id":"CVE-2026-52783","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-29T13:17:51.621Z"}}]}}}