{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-52780: OpenProject: Cache store poisoning leads to Remote Code Execution (RCE)","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-52780","status":"final","version":"1","initial_release_date":"2026-06-26T19:09:21.329Z","current_release_date":"2026-06-26T19:09:21.329Z","revision_history":[{"date":"2026-06-26T19:09:21.329Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, cache store poisoning leads to Remote Code Execution (RCE). This vulnerability is fixed in 17.3.3 and 17.4.1.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-52780 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-52780"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-52780"},{"category":"external","summary":"https://github.com/opf/openproject/security/advisories/GHSA-qj96-f42f-6336","url":"https://github.com/opf/openproject/security/advisories/GHSA-qj96-f42f-6336"}]},"product_tree":{"branches":[{"category":"vendor","name":"opf","branches":[{"category":"product_name","name":"openproject","branches":[{"category":"product_version","name":"< 17.3.3","product":{"name":"opf openproject < 17.3.3","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:opf:openproject:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":">= 17.4.0, < 17.4.1","product":{"name":"opf openproject >= 17.4.0, < 17.4.1","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:opf:openproject:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-52780","title":"OpenProject: Cache store poisoning leads to Remote Code Execution (RCE)","notes":[{"category":"description","text":"OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, cache store poisoning leads to Remote Code Execution (RCE). This vulnerability is fixed in 17.3.3 and 17.4.1.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":9.6,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1","CSAFPID-2"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2"]}]}]}