CVE-2026-34486 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-34486HIGH

Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  N  N    7.5   .8293   99.6   YES

AFFECTED
  Product        Versions   Fixed
  Apache Tomcat  11.0.20 –  —

TIMELINE
  Mar 30  Reserved by apache
  Aug 4   Added to CISA KEV, remediation due 2026-08-07
  Aug 4   Published (CNA: apache)
  Aug 8   DUE DATE PASSED — CVE-2026-34486 (Apache Software Foundation Apache Tomcat). CISA remediation deadline was August 7, 2026; still in catalog.

CWE-311, CWE-807 · CNA: apache · CVSS v3.1 · 21 references · NVD status: Analyzed · KEV due August 7, 2026

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
March 30, 2026	Reserved	Reserved by apache
August 4, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-08-07
August 4, 2026	Published	Published (CNA: apache)
August 8, 2026	DUE DATE PASSED	DUE DATE PASSED — CVE-2026-34486 (Apache Software Foundation Apache Tomcat). CISA remediation deadline was August 7, 2026; still in catalog.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Apache Software Foundation	Apache Tomcat	—	11.0.20	—

Weaknesses

CWE-311 · CWE-807

References (21)

https://access.redhat.com/errata/RHSA-2026:36787 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:36788 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:36789 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:36790 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:36876 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:36877 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:36878 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:36879 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:37136 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:37137 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:38505 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:39188 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2026:39189 [Third Party Advisory]
https://access.redhat.com/security/cve/CVE-2026-34486 [Third Party Advisory]
https://bugzilla.redhat.com/show_bug.cgi?id=2457027 [Issue Tracking, Third Party Advisory]
https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly [Mailing List, Vendor Advisory]
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34486.json [Third Party Advisory]
https://socradar.io/blog/snowlight-government-chinese-campaign/ [Third Party Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34486 [US Government Resource]
https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat [Third Party Advisory]
https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat [Mitigation, Third Party Advisory]

Authoritative record: CVE-2026-34486 at cve.org

Vendors: apache

Weaknesses: CWE-311 · CWE-807

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-34486 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.