{"id":"CVE-2021-27777","aliases":["EUVD-2021-14518","GHSA-cvfm-9587-3rg8"],"status":"published","title":"HCL Unica Platform is vulnerable to XML External Entity (XXE) injection","description":"XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00846,"percentile":0.58528,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-611","CWE-91"],"published":"2022-05-12T21:25:31Z","modified":"2026-06-17T03:45:26Z","products":[{"vendor":"hcl software","product":"hcl unica"},{"vendor":"hcltech","product":"unica"}],"references":[{"url":"https://support.hcltechsw.com/csm?id=kb_article\u0026sysparm_article=KB0097124","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27777"},{"url":"https://github.com/advisories/GHSA-cvfm-9587-3rg8"}],"sources":{"cve":[{"id":"CVE-2021-27777","title":"HCL Unica Platform is vulnerable to XML External Entity (XXE) injection","description":"XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.","status":"published","published":"2022-05-12T21:25:31.294Z","modified":"2024-09-16T19:31:23.448Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-91"],"updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-14518","description":"XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.","status":"published","published":"2022-05-12T21:25:31Z","modified":"2024-09-16T19:31:23Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:55:22.355392Z"}],"ghsa":[{"id":"GHSA-cvfm-9587-3rg8","title":"XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers...","description":"XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.","status":"published","published":"2022-05-13T00:00:20Z","modified":"2023-02-01T05:02:21Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:49:53.83549Z"}],"nvd":[{"id":"CVE-2021-27777","description":"XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.","status":"published","published":"2022-05-12T22:15:12.067Z","modified":"2026-06-17T03:45:26.253Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-91","CWE-611"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}