CVE-2026-34486 KEV
7.5
HIGH · CVSS 3.1 · EPSS 6.6% (pctl 94)
Patch first
On CISA KEV — known exploited in the wild, due 2026-08-07.
Description
Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.
Scoring
| CVSS | 7.5 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| EPSS | 6.56% — more likely to be exploited than 94% of all CVEs |
| Weakness | CWE-311 |
| On CISA KEV | yes — remediate by 2026-08-07 |
| Public exploit | none known |
| Published | 2026-04-09 |
| Last modified | 2026-09-21 |
CISA KEV
| Name | Apache Tomcat Missing Encryption of Sensitive Data Vulnerability |
|---|---|
| Added | 2026-08-04 |
| Due | 2026-08-07 |
| Vendor / product | Apache / Tomcat |
| Ransomware use | none reported |
Affected (7)
| Vendor | Product |
|---|---|
| apache | tomcat |
| redhat | enterprise linux |
| redhat | enterprise linux els |
| redhat | enterprise linux eus |
| redhat | enterprise linux tus |
| redhat | enterprise linux update services for sap solutions |
| redhat | jboss web server |
References
- https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat
- https://access.redhat.com/errata/RHSA-2026:36787
- https://access.redhat.com/errata/RHSA-2026:36788
- https://access.redhat.com/errata/RHSA-2026:36789
- https://access.redhat.com/errata/RHSA-2026:36790
- https://access.redhat.com/errata/RHSA-2026:36876
- https://access.redhat.com/errata/RHSA-2026:36877
- https://access.redhat.com/errata/RHSA-2026:36878
- https://access.redhat.com/errata/RHSA-2026:36879
- https://access.redhat.com/errata/RHSA-2026:37136
- https://access.redhat.com/errata/RHSA-2026:37137
- https://access.redhat.com/errata/RHSA-2026:38505
- https://access.redhat.com/errata/RHSA-2026:39188
- https://access.redhat.com/errata/RHSA-2026:39189
- https://access.redhat.com/security/cve/CVE-2026-34486
- https://bugzilla.redhat.com/show_bug.cgi?id=2457027
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34486.json
- https://socradar.io/blog/snowlight-government-chinese-campaign/
→ the Explorer · watch your stack · NVD