Apache Tomcat up to 9.0.116/10.1.53/11.0.20 missing encryption

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Apache Tomcat up to 9.0.116/10.1.53/11.0.20. Affected by this issue is some unknown functionality. The manipulation results in missing encryption. This vulnerability is identified as CVE-2026-34486. The attack can be executed remotely. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apache Tomcat up to 9.0.116/10.1.53/11.0.20. It has been classified as problematic. Affected is an unknown code block. The manipulation with an unknown input leads to a missing encryption vulnerability. CWE is classifying the issue as CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. This is going to have an impact on confidentiality. CVE summarizes:

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.

The weakness was released by Bartlomiej Dmitruk. The advisory is shared for download at lists.apache.org. This vulnerability is traded as CVE-2026-34486 since 03/30/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but an exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 305883 (Linux Distros Unpatched Vulnerability : CVE-2026-34486), which helps to determine the existence of the flaw in a target environment. This issue was added on 08/04/2026 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 08/07/2026:

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 BO

Upgrading to version 9.0.117, 10.1.54 or 11.0.21 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (305883) and CERT Bund (WID-SEC-2026-1038). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • IBM Power Hardware Management Console
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • IBM Spectrum Protect Plus
  • Apache Tomcat
  • HCL Commerce
  • Red Hat JBoss Web Server

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing encryption
CWE: CWE-311 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 305883
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-34486

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Tomcat 9.0.117/10.1.54/11.0.21

Timelineinfo

03/30/2026 CVE reserved
04/09/2026 +10 days Advisory disclosed
04/09/2026 +0 days VulDB entry created
08/06/2026 +119 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Researcher: Bartlomiej Dmitruk
Status: Confirmed

CVE: CVE-2026-34486 (🔒)
GCVE (CVE): GCVE-0-2026-34486
GCVE (VulDB): GCVE-100-356676
CERT Bund: WID-SEC-2026-1038 - Apache Tomcat und Tomcat Native: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/09/2026 22:10
Updated: 08/06/2026 23:12
Changes: 04/09/2026 22:10 (56), 04/12/2026 08:04 (2), 05/04/2026 01:00 (7), 05/27/2026 05:21 (11), 07/10/2026 08:43 (1), 08/04/2026 22:39 (12), 08/06/2026 21:22 (5), 08/06/2026 23:12 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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