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Critical severity · published Jul 14, 2026
CVE-2026-59084
Apache Tomcat: EncryptInterceptor requirements not clearly documented
9.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
11.0.0-M1 through 11.0.23; 10.1.0-M1 through 10.1.56; 9.0.13 through 9.0.119; 8.5.38 through 8.5.100; 7.0.100 through 7.0.109 · source: vendor, NVD
Affected product
TO
Tomcat
Apache
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59084
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59084
Mitigation
https://lists.apache.org/thread/7w9746ootcxo0gvx26xjpw80l31f1qw7
Mailing List
http://www.openwall.com/lists/oss-security/2026/07/14/8
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