{"id":"CVE-2020-23957","aliases":["EUVD-2020-16694","GHSA-q835-q3qm-4v3c"],"status":"published","title":"Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID...","description":"Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID parameter, as demonstrated by a pyActivity=Data-TRACERSettings.pzStartTracerSession request to a PRAuth URI.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00686,"percentile":0.5291,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2020-12-15T20:31:17Z","modified":"2026-06-17T03:05:06Z","products":[{"vendor":"pega","product":"pega_platform"}],"references":[{"url":"https://jayaramyalla.medium.com/cross-site-scripting-in-pega-cve-2020-23957-16d1c417da5f","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-23957"},{"url":"https://github.com/advisories/GHSA-q835-q3qm-4v3c"}],"sources":{"cve":[{"id":"CVE-2020-23957","description":"Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID parameter, as demonstrated by a pyActivity=Data-TRACERSettings.pzStartTracerSession request to a PRAuth URI.","status":"published","published":"2020-12-15T20:31:17Z","modified":"2024-08-04T15:05:11.132Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-16694","description":"Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID parameter, as demonstrated by a pyActivity=Data-TRACERSettings.pzStartTracerSession request to a PRAuth URI.","status":"published","published":"2020-12-15T20:31:17Z","modified":"2024-08-04T15:05:11Z","updated_at":"2026-11-03T03:07:20.733107Z"}],"ghsa":[{"id":"GHSA-q835-q3qm-4v3c","title":"Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID...","description":"Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID parameter, as demonstrated by a pyActivity=Data-TRACERSettings.pzStartTracerSession request to a PRAuth URI.","status":"published","published":"2022-05-24T17:36:27Z","modified":"2023-01-29T05:04:45Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:37.901426Z"}],"nvd":[{"id":"CVE-2020-23957","description":"Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID parameter, as demonstrated by a pyActivity=Data-TRACERSettings.pzStartTracerSession request to a PRAuth URI.","status":"published","published":"2020-12-15T21:15:15.157Z","modified":"2026-06-17T03:05:06.63Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:27.73474Z"}]}}