CVE-2026-74516: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-p473-wqx8-95rq
CVSS 8.2
Published
Advisory Summary

CVE-2026-74516 is a HIGH (CVSS 8.2) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74516 at a Glance

CVE Identifier CVE-2026-74516
GHSA Identifier GHSA-p473-wqx8-95rq
Severity HIGH
CVSS v3.1 Base Score 8.2
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

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).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-74516

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.

Verify Direct and Transitive Dependencies

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-2026-74516, 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 General Security Weakness. 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

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active Always update x2APIC MSR intercepts for L1 when AVIC is deactivated, even if L2 is active and KVM is using a separate MSR bitmap to run L2. If AVIC is fully enabled prior to running L2, and is then inhibited while L2 is active (for a VM-scoped inhibit), then KVM will run L1 with AVIC disabled, but with x2APIC MSR intercepts disabled, i.e. will allow L1 to read most of the host's APIC state, send arbitrary interrupts, change task priority, and ultimately trivially DoS the host. E.g. sending a self-IPI in L1 on HYPERV_REENLIGHTENMENT_VECTOR, 0xee, with CONFIG_HYPERV=n in the host kernel as a "safe" PoC, yields: Spurious interrupt (vector 0xee) on CPU#425. Acked And hacking KVM to abuse kvm_set_posted_intr_wakeup_handler() to register a handler and WARN on POSTED_INTR_WAKEUP_VECTOR yields: ------------[ cut here ]------------ WARNING: arch/x86/kvm/svm/svm.c:5594 at pi_wakeup_handler+0x9/0x10 [kvm_amd], CPU#156: nested_x2apic_t/316940 CPU: 156 UID: 0 PID: 316940 Comm: nested_x2apic_t Tainted: G S U Tainted: [S]=CPU_OUT_OF_SPEC, [U]=USER Hardware name: Google Astoria-Turin/astoria, BIOS 0.20260209.0-0 02/09/2026 RIP: 0010:pi_wakeup_handler+0x9/0x10 [kvm_amd] Call Trace: <IRQ> sysvec_kvm_posted_intr_wakeup_ipi+0x64/0x80 </IRQ> <TASK> asm_sysvec_kvm_posted_intr_wakeup_ipi+0x1a/0x20 RIP: 0010:vcpu_run+0x1430/0x1e40 [kvm] kvm_arch_vcpu_ioctl_run+0x2c1/0x600 [kvm] kvm_vcpu_ioctl+0x580/0x6b0 [kvm] __se_sys_ioctl+0x6d/0xb0 do_syscall_64+0x10a/0x480 entry_SYSCALL_64_after_hwframe+0x4b/0x53 RIP: 0033:0x46ff4b </TASK> ---[ end trace 0000000000000000 ]---

References

Frequently Asked Questions

What is CVE-2026-74516?
CVE-2026-74516 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-74516?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74516?
CVE-2026-74516 has a CVSS v3.1 base score of 8.2 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74516?
CVE-2026-74516 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74516?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p473-wqx8-95rq",
  "modified" : "2026-08-19T18:32:29Z",
  "published" : "2026-08-15T15:30:35Z",
  "aliases" : [ "CVE-2026-74516" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active\n\nAlways update x2APIC MSR intercepts for L1 when AVIC is deactivated, even\nif L2 is active and KVM is using a separate MSR bitmap to run L2.  If AVIC\nis fully enabled prior to running L2, and is then inhibited while L2 is\nactive (for a VM-scoped inhibit), then KVM will run L1 with AVIC disabled,\nbut with x2APIC MSR intercepts disabled, i.e. will allow L1 to read most of\nthe host's APIC state, send arbitrary interrupts, change task priority, and\nultimately trivially DoS the host.\n\nE.g. sending a self-IPI in L1 on HYPERV_REENLIGHTENMENT_VECTOR, 0xee, with\nCONFIG_HYPERV=n in the host kernel as a \"safe\" PoC, yields:\n\n  Spurious interrupt (vector 0xee) on CPU#425. Acked\n\nAnd hacking KVM to abuse kvm_set_posted_intr_wakeup_handler() to register a\nhandler and WARN on POSTED_INTR_WAKEUP_VECTOR yields:\n\n  ------------[ cut here ]------------\n  WARNING: arch/x86/kvm/svm/svm.c:5594 at pi_wakeup_handler+0x9/0x10 [kvm_amd], CPU#156: nested_x2apic_t/316940\n  CPU: 156 UID: 0 PID: 316940 Comm: nested_x2apic_t Tainted: G S   U\n  Tainted: [S]=CPU_OUT_OF_SPEC, [U]=USER\n  Hardware name: Google Astoria-Turin/astoria, BIOS 0.20260209.0-0 02/09/2026\n  RIP: 0010:pi_wakeup_handler+0x9/0x10 [kvm_amd]\n  Call Trace:\n   <IRQ>\n   sysvec_kvm_posted_intr_wakeup_ipi+0x64/0x80\n   </IRQ>\n   <TASK>\n   asm_sysvec_kvm_posted_intr_wakeup_ipi+0x1a/0x20\n  RIP: 0010:vcpu_run+0x1430/0x1e40 [kvm]\n   kvm_arch_vcpu_ioctl_run+0x2c1/0x600 [kvm]\n   kvm_vcpu_ioctl+0x580/0x6b0 [kvm]\n   __se_sys_ioctl+0x6d/0xb0\n   do_syscall_64+0x10a/0x480\n   entry_SYSCALL_64_after_hwframe+0x4b/0x53\n  RIP: 0033:0x46ff4b\n   </TASK>\n  ---[ end trace 0000000000000000 ]---",
  "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-2026-74516"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4ca05385b3ddbd463be17c6d69ec76fca657081d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6664a5aea45318f4ec156a729949b474dd6e3159"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7668c58dcf465559dc7a0d2e95e9cb79cf47454b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7d3aae206663c4e006b25a1c7a20a4029e67da76"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/89f9e8398e79c49886766fc24a84c37726231104"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f12373625b4dc9bcc89c41872648878c73bb9272"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:17:56Z"
  }
}