CVE-2026-59083: Software Security Vulnerability Vulnerability
CRITICALCVE-2026-59083 is a CRITICAL (CVSS 9.1) security vulnerability vulnerability (CWE-177: Improper Handling of URL Encoding (Hex Encoding)) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly handle when all or part of an input has been url encoded.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-59083 at a Glance
Security Impact
CVSS: 9.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
How to Fix CVE-2026-59083
To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-59083, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-177: Improper Handling of URL Encoding (Hex Encoding), where the product does not properly handle when all or part of an input has been url encoded. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
References
Frequently Asked Questions
What is CVE-2026-59083?
Which Software versions are affected?
What version fixes CVE-2026-59083?
What is the CVSS score of CVE-2026-59083?
What CWE is associated with CVE-2026-59083?
How can I check Maven dependencies for CVE-2026-59083?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-hcjr-322h-429r",
"modified" : "2026-07-14T15:32:15Z",
"published" : "2026-07-14T09:31:44Z",
"aliases" : [ "CVE-2026-59083" ],
"details" : "Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security constraint bypass for some configurations.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.0.M1 through 9.0.119, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected.\n\nUsers are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120, which fix the issue.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-59083"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread/3g63zos2gkjo5vgnrk8kxmosv47w6wbq"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2026/07/14/7"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-177" ],
"severity" : "CRITICAL",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-14T09:16:41Z"
}
}