KEV Entry

CVE-2017-20290

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2017-20290

2026-10-22 11:10 UTC

Timestamps

2026-10-22

2026-10-22

Scope

Discourse < 1.9.0.beta13 Reflected XSS via /email/unsubscribed | Affected: Discourse / Discourse | CVSS: 5.1 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True

References
  • {'id': 'CVE-2017-20290', 'url': 'https://www.cve.org/CVERecord?id=CVE-2017-20290'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2017-20290'}

2b49d583-217b-4e8f-8d5f-997ee534b3b6

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

2026-10-23 12:00 UTC

2026-10-23 12:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2026-10-22T11:10:50.824Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2017-20290",
  "cvss_estimated": false,
  "cvss_score": 5.1,
  "cvss_severity": "MEDIUM",
  "epss_percentile": null,
  "epss_score": null,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": true,
  "previous_ids": [],
  "product": "Discourse",
  "title": "Discourse \u003c 1.9.0.beta13 Reflected XSS via /email/unsubscribed",
  "used_in_malware": "unknown",
  "vendor": "Discourse",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2017-20290"
}
 -
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