{"id":"CVE-2021-27760","aliases":["EUVD-2021-14501","GHSA-xcf3-q63w-pqpj"],"status":"published","title":"HCL Notes 11.0 - 11.0.1 FP4 Sametime Embedded chat clients are vulnerable to group chats loading script on restart","description":"An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00727,"percentile":0.5462,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-732"],"published":"2022-05-06T18:10:30Z","modified":"2026-06-17T03:45:24Z","products":[{"vendor":"hcl","product":"hcl notes"},{"vendor":"hcl software","product":"hcl notes"},{"vendor":"hcltech","product":"hcl_inotes"}],"references":[{"url":"https://support.hcltechsw.com/csm?id=kb_article\u0026sysparm_article=KB0097670","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27760"},{"url":"https://github.com/advisories/GHSA-xcf3-q63w-pqpj"}],"sources":{"cve":[{"id":"CVE-2021-27760","title":"HCL Notes 11.0 - 11.0.1 FP4 Sametime Embedded chat clients are vulnerable to group chats loading script on restart","description":"An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.","status":"published","published":"2022-05-06T18:10:30.931Z","modified":"2024-09-17T04:19:12.658Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14501","description":"An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.","status":"published","published":"2022-05-06T18:10:30Z","modified":"2024-09-17T04:19:12Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:28:24.323088Z"}],"ghsa":[{"id":"GHSA-xcf3-q63w-pqpj","title":"An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An...","description":"An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.","status":"published","published":"2022-05-07T00:00:36Z","modified":"2023-01-27T05:02:29Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:42:03.588739Z"}],"nvd":[{"id":"CVE-2021-27760","description":"An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.","status":"published","published":"2022-05-06T18:15:08.713Z","modified":"2026-06-17T03:45:24.667Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium","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-20"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}