{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-54104: U.S. GAO EPDS and CBCA EDS client-based privilege escalation","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-54104","status":"final","version":"1","initial_release_date":"2026-06-18T16:12:58.699Z","current_release_date":"2026-06-18T16:12:58.699Z","revision_history":[{"date":"2026-06-18T16:12:58.699Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"The U.S. Government Accountability Office (GAO) Electronic Protest Docketing System (EPDS) and Civilian Board of Contract Appeals (CBCA) Electronic Docketing System (EDS) trusts client-provided values for the 'epds_role_id' parameter without verification, allowing a remote, authenticated attacker to escalate their own privileges.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-54104 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-54104"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-54104"},{"category":"external","summary":"url","url":"https://www.cve.org/CVERecord?id=CVE-2026-54104"},{"category":"external","summary":"url","url":"https://epds.gao.gov/"},{"category":"external","summary":"url","url":"https://www.eds.cbca.gov/login"},{"category":"external","summary":"url","url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-01.json"}]},"product_tree":{"branches":[{"category":"vendor","name":"Government Accountability Office","branches":[{"category":"product_name","name":"Electronic Protest Docketing System (EPDS)","branches":[{"category":"product_version_range","name":"<2026-02-22","product":{"name":"Government Accountability Office Electronic Protest Docketing System (EPDS) <2026-02-22","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:government_accountability_office:electronic_protest_docketing_system_\\(epds\\):*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"2026-02-22","product":{"name":"Government Accountability Office Electronic Protest Docketing System (EPDS) 2026-02-22","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:government_accountability_office:electronic_protest_docketing_system_\\(epds\\):*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Civilian Board of Contract Appeals","branches":[{"category":"product_name","name":"Electronic Docketing System (EDS)","branches":[{"category":"product_version_range","name":"<2026-03-19","product":{"name":"Civilian Board of Contract Appeals Electronic Docketing System (EDS) <2026-03-19","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:civilian_board_of_contract_appeals:electronic_docketing_system_\\(eds\\):*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"2026-03-19","product":{"name":"Civilian Board of Contract Appeals Electronic Docketing System (EDS) 2026-03-19","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:civilian_board_of_contract_appeals:electronic_docketing_system_\\(eds\\):*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-54104","title":"U.S. GAO EPDS and CBCA EDS client-based privilege escalation","notes":[{"category":"description","text":"The U.S. Government Accountability Office (GAO) Electronic Protest Docketing System (EPDS) and Civilian Board of Contract Appeals (CBCA) Electronic Docketing System (EDS) trusts client-provided values for the 'epds_role_id' parameter without verification, allowing a remote, authenticated attacker to escalate their own privileges.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-3"],"fixed":["CSAFPID-2","CSAFPID-4"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-3"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 2026-02-22, 2026-03-19.","product_ids":["CSAFPID-1","CSAFPID-3"]}]}]}