{"id":"CVE-2021-43549","aliases":["EUVD-2021-30478","GHSA-pj89-mr75-5fmf"],"status":"published","title":"OSIsoft PI Web API","description":"A remote authenticated attacker with write access to a PI Server could trick a user into interacting with a PI Web API endpoint and redirect them to a malicious website. As a result, a victim may disclose sensitive information to the attacker or be provided with false information.","severity":{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00711,"percentile":0.539,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-11-18T14:18:48Z","modified":"2026-06-17T04:11:06Z","products":[{"vendor":"aveva","product":"pi web api"},{"vendor":"osisoft","product":"pi web api"},{"vendor":"osisoft","product":"pi_web_api"}],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-313-06","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43549"},{"url":"https://github.com/advisories/GHSA-pj89-mr75-5fmf"}],"sources":{"cve":[{"id":"CVE-2021-43549","title":"OSIsoft PI Web API","description":"A remote authenticated attacker with write access to a PI Server could trick a user into interacting with a PI Web API endpoint and redirect them to a malicious website. As a result, a victim may disclose sensitive information to the attacker or be provided with false information.","status":"published","published":"2021-11-18T14:18:48.609Z","modified":"2024-09-16T23:00:26.909Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30478","description":"A remote authenticated attacker with write access to a PI Server could trick a user into interacting with a PI Web API endpoint and redirect them to a malicious website. As a result, a victim may disclose sensitive information to the attacker or be provided with false information.","status":"published","published":"2021-11-18T14:18:48Z","modified":"2024-09-16T23:00:26Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:54:58.273879Z"}],"ghsa":[{"id":"GHSA-pj89-mr75-5fmf","title":"A remote authenticated attacker with write access to a PI Server could trick a user into...","description":"A remote authenticated attacker with write access to a PI Server could trick a user into interacting with a PI Web API endpoint and redirect them to a malicious website. As a result, a victim may disclose sensitive information to the attacker or be provided with false information.","status":"published","published":"2022-05-24T19:21:05Z","modified":"2023-01-30T05:04:12Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:59.889535Z"}],"nvd":[{"id":"CVE-2021-43549","description":"A remote authenticated attacker with write access to a PI Server could trick a user into interacting with a PI Web API endpoint and redirect them to a malicious website. As a result, a victim may disclose sensitive information to the attacker or be provided with false information.","status":"published","published":"2021-11-18T15:15:10.03Z","modified":"2026-06-17T04:11:06.963Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:01.428028Z"}]}}