Patch tracker / CVE reference / CVE-2026-59084

CVE-2026-59084

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....

Risk summary

Critical

9.1

CVSS v3 base

Critical

Severity

Not listed

Actively exploited

Critical severity vulnerability, CVSS 9.1.

How to fix CVE-2026-59084 Admin questions

Senserva AI Opinion and rich prompt for CVE-2026-59084

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I am an IT admin assessing a vulnerability. Facts for CVE-2026-59084 (source: https://senserva.com/cve/CVE-2026-59084.html, data from CISA KEV and NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2026-59084: Critical severity vulnerability, CVSS 9.1
- Actively exploited (CISA KEV): no
- Affected: Apache Tomcat
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) What to patch or mitigate first. 4) How to check whether my devices are exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Schedule normally

No exploitation observed: not in the CISA KEV catalog, EPSS under 1%.

No vendor fix is mapped yet. This page refreshes daily and will name the patch the day one is published.

Do this now: Deploy with your normal update cycle. This page refreshes daily; the verdict changes the day the data does.

Updated August 21, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

How to fix CVE-2026-59084

Update Apache Tomcat to a version newer than 7.0.109. Update Apache Tomcat to a version newer than 8.5.100. Update Apache Tomcat to a version newer than 9.0.119. (Fixed-version data from NVD.) Where a workaround exists, apply it only until the update is deployed, not as a substitute.

Vendor advisory NVD detail

Common questions about CVE-2026-59084

Is CVE-2026-59084 actively exploited?

It is not currently listed in the CISA Known Exploited Vulnerabilities catalog. That can change: unexploited CVEs regularly get weaponized months after disclosure, which is why patching on your normal cadence matters.

What fixes CVE-2026-59084?

Update Apache Tomcat to a version newer than 7.0.109. Update Apache Tomcat to a version newer than 8.5.100. Update Apache Tomcat to a version newer than 9.0.119. Fixed-version data from NVD; the vendor advisory linked on this page has the details.

Which products are affected by CVE-2026-59084?

Apache Tomcat.

Can I ask my own AI about CVE-2026-59084?

Yes. This page includes a free, ready-to-paste AI prompt with CVE-2026-59084's key facts: severity, CVSS, CISA KEV status, and the affected products. Copy it into Claude, ChatGPT, or Copilot for a triage plan.

Scope and sources

Affected products

Apache Tomcat

Authoritative references

CVE record NVD detail

Every Microsoft CVE and the patches that fix it, ranked by real-world risk: the Microsoft Patch Tracker. The full searchable CVE reference: CVE and vulnerability management.