KEV Entry

CVE-2021-42567

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-42567

2021-12-07 21:10 UTC

Timestamps

2021-12-07

2021-12-07

Scope

Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints. | Affected: Apereo / CAS | CVSS: 6.1 (MEDIUM) | EPSS: 0.08191 | Used in malware: unknown | Not yet in CISA KEV: True

References
  • {'id': 'CVE-2021-42567', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-42567'}
  • {'id': 'GHSA-GFHX-JJWQ-63GV', 'url': 'https://github.com/advisories/GHSA-GFHX-JJWQ-63GV'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-42567'}

d325c7a4-bed7-4a7f-97c7-150cdd78c4e8

Previdian
caeb2787-0d58-4236-9039-7c86c3e566f3

2026-11-04 13:00 UTC

2026-11-04 13:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2021-12-07T21:10:49.000Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2021-42567",
  "cvss_estimated": false,
  "cvss_score": 6.1,
  "cvss_severity": "MEDIUM",
  "epss_percentile": 0.94878,
  "epss_score": 0.08191,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": "GHSA-GFHX-JJWQ-63GV",
  "not_yet_in_cisa_kev": true,
  "previous_ids": [],
  "product": "CAS",
  "title": "Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.",
  "used_in_malware": "unknown",
  "vendor": "Apereo",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-42567"
}
 -
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