CVE-2026-59084
CWE-1059Published: July 14, 2026· Updated: Jul 14, 2026
Official Description
Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to securely configure the EncryptInterceptor were not clearly documented.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.13 through 9.0.119, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Other versions that have reached end of support may also be affected.
Users are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120 which fix the issue.
Risk Analysis
This critical vulnerability in Apache Tomcat is due to insufficient technical documentation regarding the secure configuration of the EncryptInterceptor. While not a direct code flaw, the lack of clear guidance can lead to insecure deployments, potentially resulting in information disclosure. With a CVSS score of 9.1, this issue poses a significant risk, but there is no information on exploitation likelihood (EPSS) or confirmed exploitation (KEV).
No public exploit is known for this vulnerability, and it has not been confirmed as exploited by CISA. The vulnerability is remotely exploitable over the network with low attack complexity and requires no privileges or user interaction.
Users are recommended to upgrade Apache Tomcat to version 11.0.24, 10.1.57, or 9.0.120. Review and apply the updated documentation for securely configuring the EncryptInterceptor.
Technical Analysis
CVE-2026-59084 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-1059)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-59084 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts