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7.5
HIGH CVSS 3.1
CVE-2026-34486
Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
Overview
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
INFO

Published Date :

April 9, 2026, 8:16 p.m.

Last Modified :

April 14, 2026, 12:45 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-34486 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apache tomcat
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Upgrade Apache Tomcat to a patched version to resolve encryption bypass.
  • Upgrade to Apache Tomcat 11.0.21.
  • Upgrade to Apache Tomcat 10.1.54.
  • Upgrade to Apache Tomcat 9.0.117.
Public PoC/Exploit Available at Github

CVE-2026-34486 has a 7 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-34486.

URL Resource
https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly Mailing List Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-34486 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-34486 weaknesses.

CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies Accessing/Intercepting/Modifying HTTP Cookies CAPEC-37: Retrieve Embedded Sensitive Data Retrieve Embedded Sensitive Data CAPEC-65: Sniff Application Code Sniff Application Code CAPEC-157: Sniffing Attacks Sniffing Attacks CAPEC-158: Sniffing Network Traffic Sniffing Network Traffic CAPEC-204: Lifting Sensitive Data Embedded in Cache Lifting Sensitive Data Embedded in Cache CAPEC-383: Harvesting Information via API Event Monitoring Harvesting Information via API Event Monitoring CAPEC-384: Application API Message Manipulation via Man-in-the-Middle Application API Message Manipulation via Man-in-the-Middle CAPEC-385: Transaction or Event Tampering via Application API Manipulation Transaction or Event Tampering via Application API Manipulation CAPEC-386: Application API Navigation Remapping Application API Navigation Remapping CAPEC-387: Navigation Remapping To Propagate Malicious Content Navigation Remapping To Propagate Malicious Content CAPEC-388: Application API Button Hijacking Application API Button Hijacking CAPEC-477: Signature Spoofing by Mixing Signed and Unsigned Content Signature Spoofing by Mixing Signed and Unsigned Content CAPEC-609: Cellular Traffic Intercept Cellular Traffic Intercept

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
helGayhub233/CVE-2026-34486-Tribes

Tribes 协议探测

Python

Updated: 2 weeks ago
0 stars 0 fork 0 watcher
Born at : April 16, 2026, 9:35 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
404-src/CVE-2026-34486

Apache Tomcat EncryptInterceptor Bypass → Unauthenticated RCE (CVE-2026-34486)

Python

Updated: 1 week, 6 days ago
3 stars 3 fork 3 watcher
Born at : April 15, 2026, 1:55 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
AirSkye/CVE-2026-34486-poc

CVE-2026-34486 Apache Tomcat EncryptInterceptor 绕过漏洞复现（使用GLM5.1复现完成）

Shell

Updated: 1 week, 6 days ago
7 stars 0 fork 0 watcher
Born at : April 15, 2026, 7:30 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
punitdarji/tomcat-cve-2026-34486

CVE labs

Dockerfile Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : April 15, 2026, 6:46 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Threekiii/CVE

一个 CVE 漏洞预警知识库，无 exp/poc，部分包含修复方案。A knowledge base of CVE security vulnerability, no PoCs/exploits.

Updated: 1 week ago
164 stars 23 fork 23 watcher
Born at : Jan. 5, 2023, 2:19 a.m. This repo has been linked 242 different CVEs too.
Profile Photo
nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 5 days, 8 hours ago
7667 stars 1247 fork 1247 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 749 different CVEs too.
Profile Photo
tanjiti/sec_profile

爬取secwiki和xuanwu.github.io/sec.today,分析安全信息站点、安全趋势、提取安全工作者账号(twitter,weixin,github等)

Python HTML

Updated: 5 days, 10 hours ago
1514 stars 247 fork 247 watcher
Born at : Feb. 19, 2019, 10:24 a.m. This repo has been linked 14 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-34486 vulnerability anywhere in the article.

  • CybersecurityNews
Apache Tomcat Vulnerabilities Enables Bypass of EncryptInterceptor

The Apache Software Foundation has released emergency security updates to address multiple vulnerabilities in Apache Tomcat. The latest advisories highlight a critical patching error that inadvertentl ... Read more

Published Date: Apr 13, 2026 (2 weeks, 3 days ago)
  • Daily CyberSecurity
Encryption Bypasses and Kubernetes Token Leaks Hit Apache Tomcat

Apache Tomcat, the open-source backbone for millions of Java-based web applications, has been hit by a wave of security disclosures. A comprehensive audit has revealed ten distinct vulnerabilities aff ... Read more

Published Date: Apr 13, 2026 (2 weeks, 3 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-34486 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Apr. 14, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:apache:tomcat:10.1.53:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:11.0.20:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.116:*:*:*:*:*:*:*
    Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly Types: Mailing List, Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Apr. 10, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • New CVE Received by [email protected]

    Apr. 09, 2026

    Action Type Old Value New Value
    Added 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.
    Added CWE CWE-311
    Added Reference https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact