CVE-2026-18453: Software Security Vulnerability Vulnerability
HIGHCVE-2026-18453 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-476: NULL Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that it expects to be valid but is null.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-18453 at a Glance
Security Impact
CVSS: 7.5
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:N/I:N/A:H).
How to Fix CVE-2026-18453
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-2026-18453, 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. 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-2026-18453?
Which Software versions are affected?
What version fixes CVE-2026-18453?
What is the CVSS score of CVE-2026-18453?
What CWE is associated with CVE-2026-18453?
How can I check Maven dependencies for CVE-2026-18453?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-42wr-8m7m-5j62",
"modified" : "2026-10-08T15:32:36Z",
"published" : "2026-09-07T15:33:54Z",
"aliases" : [ "CVE-2026-18453" ],
"details" : "A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of op_shared_search allows an unauthenticated remote attacker to crash the LDAP server by sending a crafted sequence of search requests using the USE_ONE_BACKEND control, resulting in denial of service.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-18453"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2509696"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2026-18453"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:79217"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:65119"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64804"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64793"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64792"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64791"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64790"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64789"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64785"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64784"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64783"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64781"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64780"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64779"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64778"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64776"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:64771"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-476" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-09-07T15:17:31Z"
}
}