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CVE-2026-34486

7.5, high Known exploited

Apache Tomcat Missing Encryption of Sensitive Data Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
7% higher than 93.7% of scored CVEs
Exploitation
Confirmed in the wild
Published
9 Apr 20266 months ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 4 Aug 2026. US federal agencies had to remediate by 7 Aug 2026, a deadline that has passed.

Required action. 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 BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

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.

Details

Vendor
Apache and 1 more
Product
Apache Tomcat
Weakness
CWE-311 (opens in a new tab)
Status
Analyzed
Updated
21 Sept 2026
Assigner
security@apache.org

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References 21

Advisories 20

12 more

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Apache CVEs

Every Apache CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-34197 Apache ActiveMQ Improper Input Validation Vulnerability KEV EPSS 15% 8.8, high
  • CVE-2025-24813 Apache Tomcat Path Equivalence Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2024-45195 Apache OFBiz Forced Browsing Vulnerability KEV EPSS 100% 7.5, high
  • CVE-2024-38856 Apache OFBiz Incorrect Authorization Vulnerability KEV EPSS 99% 9.8, critical
  • CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Vulnerability KEV EPSS 100% 9.1, critical
  • CVE-2024-32113 Apache OFBiz Path Traversal Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2024-27348 Apache HugeGraph-Server Improper Access Control Vulnerability KEV EPSS 99% 9.8, critical
  • CVE-2023-46604 Apache ActiveMQ Deserialization of Untrusted Data Vulnerability KEV EPSS 100% 9.8, critical

Beyond this page

Is CVE-2026-34486 in your network?

This page tells you how dangerous CVE-2026-34486 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2026-34486 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

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    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-34486 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.