CVE-2026-27145: Software Security Vulnerability Vulnerability
MODERATECVE-2026-27145 is a MODERATE (CVSS 6.5) security vulnerability vulnerability (CWE-606: Unchecked Input for Loop Condition) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-27145 at a Glance
Security Impact
CVSS: 6.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H).
How to Fix CVE-2026-27145
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:tree
How to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-27145, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree
Analyze 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-606: Unchecked Input for Loop Condition, where the product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping. 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-2026-27145?
Which Software versions are affected?
What version fixes CVE-2026-27145?
What is the CVSS score of CVE-2026-27145?
What CWE is associated with CVE-2026-27145?
How can I check Maven dependencies for CVE-2026-27145?
Machine-readable OSV JSON
OSV v1.5 Schema
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"details" : "(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, \".\") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.",
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