{"id":"CVE-2021-35976","aliases":["EUVD-2021-22609","GHSA-55cx-26p7-7qcw"],"status":"published","title":"The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable...","description":"The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. The attacker could execute JavaScript code in the victim's browser by using the link to preview sites hosted on the server. Authentication is not required to exploit the vulnerability.","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":0.01148,"percentile":0.67073,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-09-10T11:08:18Z","modified":"2026-06-17T03:58:08Z","products":[{"vendor":"plesk","product":"obsidian"}],"references":[{"url":"https://www.bouali.io/cves/cve-2021-35976","tags":["x_refsource_MISC","x_transferred","Broken Link"]},{"url":"https://support.plesk.com/hc/en-us/articles/4402990507026","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://tarekbouali.com/cves/cve-2021-35976","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35976"},{"url":"https://tarekbouali.com/cves/cve-2021-35976/"},{"url":"https://github.com/advisories/GHSA-55cx-26p7-7qcw"}],"sources":{"cve":[{"id":"CVE-2021-35976","description":"The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. The attacker could execute JavaScript code in the victim's browser by using the link to preview sites hosted on the server. Authentication is not required to exploit the vulnerability.","status":"published","published":"2021-09-10T11:08:18Z","modified":"2024-08-04T00:47:43.287Z","updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-22609","description":"The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. The attacker could execute JavaScript code in the victim's browser by using the link to preview sites hosted on the server. Authentication is not required to exploit the vulnerability.","status":"published","published":"2021-09-10T11:08:18Z","modified":"2024-08-04T00:47:43Z","updated_at":"2026-11-03T03:24:29.877227Z"}],"ghsa":[{"id":"GHSA-55cx-26p7-7qcw","title":"The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable...","description":"The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. The attacker could execute JavaScript code in the victim’s browser by using the link to preview sites hosted on the server. Authentication is not required to exploit the vulnerability.","status":"published","published":"2022-05-24T22:28:14Z","modified":"2023-01-30T05:05:28Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:47:17.308018Z"}],"nvd":[{"id":"CVE-2021-35976","description":"The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. The attacker could execute JavaScript code in the victim's browser by using the link to preview sites hosted on the server. Authentication is not required to exploit the vulnerability.","status":"published","published":"2021-09-10T12:15:13.193Z","modified":"2026-06-17T03:58:08.167Z","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":"2026-11-02T14:06:58.502206Z"}]}}