CVE-2026-31788: Software Security Vulnerability Vulnerability
HIGHCVE-2026-31788 is a HIGH (CVSS 8.2) security vulnerability vulnerability (CWE-862: Missing Authorization) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not perform an authorization check when an actor attempts to access a resource or perform an action.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-31788 at a Glance
Security Impact
CVSS: 8.2
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
How to Fix CVE-2026-31788
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-2026-31788, 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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. 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-2026-31788?
Which Software versions are affected?
What version fixes CVE-2026-31788?
What is the CVSS score of CVE-2026-31788?
What CWE is associated with CVE-2026-31788?
How can I check Maven dependencies for CVE-2026-31788?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-q397-v647-xvh6",
"modified" : "2026-04-18T09:30:18Z",
"published" : "2026-03-25T12:30:24Z",
"aliases" : [ "CVE-2026-31788" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/privcmd: restrict usage in unprivileged domU\n\nThe Xen privcmd driver allows to issue arbitrary hypercalls from\nuser space processes. This is normally no problem, as access is\nusually limited to root and the hypervisor will deny any hypercalls\naffecting other domains.\n\nIn case the guest is booted using secure boot, however, the privcmd\ndriver would be enabling a root user process to modify e.g. kernel\nmemory contents, thus breaking the secure boot feature.\n\nThe only known case where an unprivileged domU is really needing to\nuse the privcmd driver is the case when it is acting as the device\nmodel for another guest. In this case all hypercalls issued via the\nprivcmd driver will target that other guest.\n\nFortunately the privcmd driver can already be locked down to allow\nonly hypercalls targeting a specific domain, but this mode can be\nactivated from user land only today.\n\nThe target domain can be obtained from Xenstore, so when not running\nin dom0 restrict the privcmd driver to that target domain from the\nbeginning, resolving the potential problem of breaking secure boot.\n\nThis is XSA-482\n\n---\nV2:\n- defer reading from Xenstore if Xenstore isn't ready yet (Jan Beulich)\n- wait in open() if target domain isn't known yet\n- issue message in case no target domain found (Jan Beulich)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-31788"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/1879319d790f7d57622cdc22807b60ea78b56b6d"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/389bae9a4409934e8b8d4dbdaaf02a3ae71cf8e4"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/3ee5b9e3de4b8bdd74183d83205481c91a9effc8"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/453b8fb68f3641fea970db88b7d9a153ed2a37e8"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/4eb245ff0d33b618e097a2c23de5df56d4ad6969"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/78432d8f0372c71c518096395537fa12be7ff24e"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/87a803edb2ded911cb587c53bff179d2a2ed2a28"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/cbede2e833da1893afbea9b3ff29b5dda23a4a91"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2026/03/24/2"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2026/03/24/3"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2026/03/24/4"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2026/03/24/5"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2026/03/26/4"
}, {
"type" : "WEB",
"url" : "http://xenbits.xen.org/xsa/advisory-482.html"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-03-25T11:16:40Z"
}
}