CVE-2026-8458: Software Security Vulnerability Vulnerability
MODERATECVE-2026-8458 is a MODERATE (CVSS 6.5) security vulnerability vulnerability (CWE-488: Exposure of Data Element to Wrong Session) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-8458 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:L/PR:L/UI:N/S:U/C:N/I:H/A:N).
How to Fix CVE-2026-8458
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-2026-8458, 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-488: Exposure of Data Element to Wrong Session, where the product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session. 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-2026-8458?
Which Software versions are affected?
What version fixes CVE-2026-8458?
What is the CVSS score of CVE-2026-8458?
What CWE is associated with CVE-2026-8458?
How can I check Maven dependencies for CVE-2026-8458?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-88c6-6jfq-mm4q",
"modified" : "2026-07-06T18:30:47Z",
"published" : "2026-07-03T09:31:26Z",
"aliases" : [ "CVE-2026-8458" ],
"details" : "libcurl might in some circumstances reuse the wrong connection when asked to\ndo Negotiate-authenticated ones, even when they are set to use different\n'services'.\n\nlibcurl features a pool of recent connections so that subsequent requests can\nreuse an existing connection to avoid overhead.\n\nWhen reusing a connection a range of criteria must be met. Due to a logical\nerror in the code, a request that was issued by an application could\nwrongfully reuse an existing connection to the same server that was\nauthenticated using different services.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-8458"
}, {
"type" : "WEB",
"url" : "https://hackerone.com/reports/3721183"
}, {
"type" : "WEB",
"url" : "https://curl.se/docs/CVE-2026-8458.html"
}, {
"type" : "WEB",
"url" : "https://curl.se/docs/CVE-2026-8458.json"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-488" ],
"severity" : "MODERATE",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-03T07:16:24Z"
}
}