Exploited vulnerability CISA KEV
CVE-2026-21962: Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability
CVE-2026-21962 is a vulnerability in Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in that CISA added to its Known Exploited Vulnerabilities catalog on August 24, 2026, meaning there is evidence it is being exploited. US federal civilian agencies must complete the required action by August 27, 2026.
CVE-2026-21962 is a vulnerability in Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in that CISA added to its Known Exploited Vulnerabilities catalog on August 24, 2026, meaning there is evidence it is being exploited. US federal civilian agencies must complete the required action by August 27, 2026.
- CVE ID
- CVE-2026-21962
- Vendor / project
- Oracle
- Product
- HTTP Server and Oracle Weblogic Server Proxy Plug-in
- Added to KEV
- Due date
- Days to remediate
- 3
- Known ransomware use
- Unknown
- Weakness
- CWE-284
CISA description #
Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in contain an improper access control vulnerability that can result in unauthorized creation, deletion or modification access to critical data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in accessible data.
Required action #
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes and references #
https://www.oracle.com/security-alerts/cpujan2026.html ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-21962
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