CVE entry · CVE-2026-34486
CVE-2026-34486: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability
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.
- Actively exploited: added to CISA’s KEV catalog on August 4, 2026.
- Use by ransomware: not established so far.
- Remediation deadline for US federal agencies: August 7, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes Apache Tomcat, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.
References
- Vendor advisory or reference cited by CISA (lists.apache.org)
- NVD entry (NIST)
- CISA KEV catalog