Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since August 4, 2026.
CVE-2026-34486
Apache Tomcat Missing Encryption of Sensitive Data Vulnerability
Added to KEV August 4, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-34486
- CWE
- CWE-311
- Affected products
- Tomcat · Apache Tomcat · Apache
What happened
Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813.
What it means for your business
Apache Tomcat is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-34486). Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813. CISA remediation due date: 2026-08-07. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: August 7, 2026
Sources
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