CVE-2026-74506: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-437r-ppxq-jxxh
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CVSS 7.8
Published
Advisory Summary

CVE-2026-74506 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74506 at a Glance

CVE Identifier CVE-2026-74506
GHSA Identifier GHSA-437r-ppxq-jxxh
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2026-74506

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-2026-74506, 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: afs: Fix UAF when sending a message In afs_make_call(), there's a race with async call reception and destruction. If a call is dispatched that doesn't have call->write_iter set (used to specify the data content for FS.StoreData), then the first rxrpc_kernel_send_data() will not set MSG_MORE in the msghdr. Once rxrpc_send_data() queues the last request packet, the response could come in at any time and cause the call to be completed and put. However, afs_make_call() will look at the call again to see it ->write_iter should be handled - something it's only allowed to do if it has its own ref on the call. Whilst this is the case for synchronous calls, it isn't true for async calls such as FS.FetchData. There's also a potential UAF in afs_make_call() in the event that an asynchronous call is being sent, but the call fails in some way (e.g. it gets aborted from the server). The problem there is that afs_make_call() tries to abort a call if the rxrpc send fails, but the asynchronous notification from rxrpc may have caused the afs_call to be torn down. generic/650 plays games with randomly taking CPUs offline, and can interject a significant delay such that the call is deallocated before afs_make_call() gets to check call->write_iter - and a UAF ensues (caught by KASAN). BUG: KASAN: slab-use-after-free in afs_make_call+0x1c90/0x2210 [kafs] Read of size 8 at addr ffff888035e050e8 by task fsstress/1409 Fix this by making afs_make_op_call() give the op->call its own ref rather than transferring the caller's ref to it and then dropping the ref when afs_make_call() returns. This also means that the afs_make_call() func never loses its ref on the call now.

References

NVD — CVE-2026-74506 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74506
git.kernel.org/stable/c/4af1ec68d5... WEB
https://git.kernel.org/stable/c/4af1ec68d54b3871155914d584fb10669c41a861
git.kernel.org/stable/c/c0d3b81f70... WEB
https://git.kernel.org/stable/c/c0d3b81f703b2a9e37fe1347610a50cdf0078c27
git.kernel.org/stable/c/daaa726b14... WEB
https://git.kernel.org/stable/c/daaa726b14fc3026a6b328614d312b698f62f391

Frequently Asked Questions

What is CVE-2026-74506?
CVE-2026-74506 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-2026-74506?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74506?
CVE-2026-74506 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74506?
CVE-2026-74506 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74506?
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
View Raw JSON 
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  "id" : "GHSA-437r-ppxq-jxxh",
  "modified" : "2026-08-17T06:33:50Z",
  "published" : "2026-08-15T15:30:34Z",
  "aliases" : [ "CVE-2026-74506" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix UAF when sending a message\n\nIn afs_make_call(), there's a race with async call reception and\ndestruction.  If a call is dispatched that doesn't have call->write_iter\nset (used to specify the data content for FS.StoreData), then the first\nrxrpc_kernel_send_data() will not set MSG_MORE in the msghdr.\n\nOnce rxrpc_send_data() queues the last request packet, the response could\ncome in at any time and cause the call to be completed and put.  However,\nafs_make_call() will look at the call again to see it ->write_iter should\nbe handled - something it's only allowed to do if it has its own ref on the\ncall.  Whilst this is the case for synchronous calls, it isn't true for\nasync calls such as FS.FetchData.\n\nThere's also a potential UAF in afs_make_call() in the event that an\nasynchronous call is being sent, but the call fails in some way (e.g. it\ngets aborted from the server).  The problem there is that afs_make_call()\ntries to abort a call if the rxrpc send fails, but the asynchronous\nnotification from rxrpc may have caused the afs_call to be torn down.\n\ngeneric/650 plays games with randomly taking CPUs offline, and can\ninterject a significant delay such that the call is deallocated before\nafs_make_call() gets to check call->write_iter - and a UAF ensues (caught\nby KASAN).\n\n   BUG: KASAN: slab-use-after-free in afs_make_call+0x1c90/0x2210 [kafs]\n   Read of size 8 at addr ffff888035e050e8 by task fsstress/1409\n\nFix this by making afs_make_op_call() give the op->call its own ref rather\nthan transferring the caller's ref to it and then dropping the ref when\nafs_make_call() returns.\n\nThis also means that the afs_make_call() func never loses its ref on the\ncall now.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c0d3b81f703b2a9e37fe1347610a50cdf0078c27"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/daaa726b14fc3026a6b328614d312b698f62f391"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:17:55Z"
  }
}