{"id":"CVE-2020-12021","aliases":["EUVD-2020-4337","GHSA-q4j7-8h9j-7jxq"],"status":"published","title":"In OSIsoft PI Web API 2019 Patch 1 (1.12.0.6346) and all previous versions, the affected product...","description":"In OSIsoft PI Web API 2019 Patch 1 (1.12.0.6346) and all previous versions, the affected product is vulnerable to a cross-site scripting attack, which may allow an attacker to remotely execute arbitrary code.","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.0157,"percentile":0.75723,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2020-06-23T21:36:23Z","modified":"2026-06-17T02:51:16Z","products":[{"vendor":"osisoft","product":"pi_web_api"}],"references":[{"url":"https://www.us-cert.gov/ics/advisories/icsa-20-163-01","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12021"},{"url":"https://github.com/advisories/GHSA-q4j7-8h9j-7jxq"}],"sources":{"cve":[{"id":"CVE-2020-12021","description":"In OSIsoft PI Web API 2019 Patch 1 (1.12.0.6346) and all previous versions, the affected product is vulnerable to a cross-site scripting attack, which may allow an attacker to remotely execute arbitrary code.","status":"published","published":"2020-06-23T21:36:23Z","modified":"2024-08-04T11:48:57.978Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-4337","description":"In OSIsoft PI Web API 2019 Patch 1 (1.12.0.6346) and all previous versions, the affected product is vulnerable to a cross-site scripting attack, which may allow an attacker to remotely execute arbitrary code.","status":"published","published":"2020-06-23T21:36:23Z","modified":"2024-08-04T11:48:57Z","updated_at":"2026-11-03T03:07:41.399649Z"}],"ghsa":[{"id":"GHSA-q4j7-8h9j-7jxq","title":"In OSIsoft PI Web API 2019 Patch 1 (1.12.0.6346) and all previous versions, the affected product...","description":"In OSIsoft PI Web API 2019 Patch 1 (1.12.0.6346) and all previous versions, the affected product is vulnerable to a cross-site scripting attack, which may allow an attacker to remotely execute arbitrary code.","status":"published","published":"2022-05-24T17:21:33Z","modified":"2023-01-29T05:03:09Z","updated_at":"2026-11-02T14:45:15.109911Z"}],"nvd":[{"id":"CVE-2020-12021","description":"In OSIsoft PI Web API 2019 Patch 1 (1.12.0.6346) and all previous versions, the affected product is vulnerable to a cross-site scripting attack, which may allow an attacker to remotely execute arbitrary code.","status":"published","published":"2020-06-23T22:15:13.98Z","modified":"2026-06-17T02:51:16.127Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:08.145904Z"}]}}