KEV Entry

CVE-2021-26084

Known Exploited Vulnerability Entry CISA

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Entry Details
Confirmed Exploited

CVE-2021-26084

2021-11-03 01:00 CET

Timestamps

2021-11-03

2021-11-03

Scope

Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability | Affected: Atlassian / Confluence Server and Data Center | Description: Atlassian Confluence Server and Data Server contain an Object-Graph Navigation Language (OGNL) injection vulnerability that may allow an unauthenticated attacker to execute code. | Required action: Apply updates per vendor instructions. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-26084

References
  • {'id': 'CVE-2021-26084', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-26084'}

da0b7391-4fbf-4d4c-8176-e29bf9831157

CISA
405284c2-e461-4670-8979-7fd2c9755a60

2026-10-02 08:10 CEST

2026-10-02 08:10 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-917"
  ],
  "date_added": "2021-11-03",
  "due_date": "2021-11-17",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Known",
  "product": "Confluence Server and Data Center",
  "vendorProject": "Atlassian",
  "vulnerabilityName": "Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability"
}
 -
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