{"id":"CVE-2026-105281","aliases":["EUVD-2026-95780","GHSA-cg72-3fmm-q6mm"],"status":"published","title":"Grid Protection Alliance openPDC and openHistorian Missing Authentication for Critical Function","description":"The internal data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and retrieve the complete device and measurement topology of the system.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00312,"percentile":0.24434,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2026-10-09T13:49:06Z","modified":"2026-10-11T17:17:01Z","products":[{"vendor":"grid protection alliance","product":"openhistorian"},{"vendor":"grid protection alliance","product":"openpdc"},{"vendor":"grid protection alliance","product":"openpdc (docker image)"}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-02"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-02.json"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105281"},{"url":"https://github.com/advisories/GHSA-cg72-3fmm-q6mm"}],"sources":{"cve":[{"id":"CVE-2026-105281","title":"Grid Protection Alliance openPDC and openHistorian Missing Authentication for Critical Function","description":"The internal data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and retrieve the complete device and measurement topology of the system.","status":"published","published":"2026-10-09T13:49:06.352Z","modified":"2026-10-11T17:05:29.198Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:19:56.755658Z"}],"euvd":[{"id":"EUVD-2026-95780","description":"The internal data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and retrieve the complete device and measurement topology of the system.","status":"published","published":"2026-10-09T13:49:06Z","modified":"2026-10-11T17:05:29Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:27:22.074542Z"}],"ghsa":[{"id":"GHSA-cg72-3fmm-q6mm","title":"The internal data publisher on openPDC accepts network connections without authentication in its...","description":"The internal data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and retrieve the complete device and measurement topology of the system.","status":"published","published":"2026-10-09T15:31:30Z","modified":"2026-10-09T15:31:37Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:13:00.589729Z"}],"nvd":[{"id":"CVE-2026-105281","description":"The internal data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and retrieve the complete device and measurement topology of the system.","status":"published","published":"2026-10-09T14:17:11.45Z","modified":"2026-10-11T17:17:01.723Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:12:55.473789Z"}]}}