CVE-2026-74688: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-3vfv-7x6v-8jg6
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CVSS 9.8
Published
Advisory Summary

CVE-2026-74688 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74688 at a Glance

CVE Identifier CVE-2026-74688
GHSA Identifier GHSA-3vfv-7x6v-8jg6
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2026-74688

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-2026-74688, 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: sctp: clear control chunk transport if it is being removed sctp_make_heartbeat_ack() caches the destination transport in chunk->transport without taking a reference. When src_out_of_asoc_ok is enabled, the HEARTBEAT ACK may remain queued on control_chunk_list instead of being transmitted immediately. If the peer transport is removed while the chunk is still queued, sctp_assoc_rm_peer() drops the transport and schedules it for RCU freeing, but only clears cached transport pointers in out_chunk_list. The queued control chunk therefore retains a dangling transport pointer. Once an ASCONF_ACK clears the suppression and the queued control chunk is transmitted, SCTP dereferences the stale transport pointer, leading to a use-after-free. Fix this by also clearing chunk->transport for queued control chunks in control_chunk_list when removing the transport.

References

NVD — CVE-2026-74688 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74688
git.kernel.org/stable/c/18d704bdd8... WEB
https://git.kernel.org/stable/c/18d704bdd809377dfd81a3c2f42426763b5da227
git.kernel.org/stable/c/4d6b9cac6d... WEB
https://git.kernel.org/stable/c/4d6b9cac6df5e0cfef1a66b3edd7aebdb9e4b7e7
git.kernel.org/stable/c/6160e756db... WEB
https://git.kernel.org/stable/c/6160e756db81d6cb63e3e2952efcf6c5134be385
git.kernel.org/stable/c/8de65194a0... WEB
https://git.kernel.org/stable/c/8de65194a04d2552cd39b6c67d942d490f22d174
git.kernel.org/stable/c/936658ec41... WEB
https://git.kernel.org/stable/c/936658ec41c28c397ef390140e02d4c91ade92f0
git.kernel.org/stable/c/c9158ceaf2... WEB
https://git.kernel.org/stable/c/c9158ceaf27780ef64534ad72f44ffde3f8ccc49
git.kernel.org/stable/c/dbb3f418a8... WEB
https://git.kernel.org/stable/c/dbb3f418a8665ffb0514e1a9520ab6a1c5d4d886
git.kernel.org/stable/c/fad4766a74... WEB
https://git.kernel.org/stable/c/fad4766a74220fe579c6fcaa10ba01c23529814f

Frequently Asked Questions

What is CVE-2026-74688?
CVE-2026-74688 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-2026-74688?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74688?
CVE-2026-74688 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74688?
CVE-2026-74688 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74688?
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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  "schema_version" : "1.4.0",
  "id" : "GHSA-3vfv-7x6v-8jg6",
  "modified" : "2026-08-25T06:31:27Z",
  "published" : "2026-08-22T18:30:29Z",
  "aliases" : [ "CVE-2026-74688" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: clear control chunk transport if it is being removed\n\nsctp_make_heartbeat_ack() caches the destination transport in\nchunk->transport without taking a reference. When src_out_of_asoc_ok is\nenabled, the HEARTBEAT ACK may remain queued on control_chunk_list instead\nof being transmitted immediately.\n\nIf the peer transport is removed while the chunk is still queued,\nsctp_assoc_rm_peer() drops the transport and schedules it for RCU freeing,\nbut only clears cached transport pointers in out_chunk_list.  The queued\ncontrol chunk therefore retains a dangling transport pointer.\n\nOnce an ASCONF_ACK clears the suppression and the queued control chunk is\ntransmitted, SCTP dereferences the stale transport pointer, leading to a\nuse-after-free.\n\nFix this by also clearing chunk->transport for queued control chunks in\ncontrol_chunk_list when removing the transport.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74688"
  }, {
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    "url" : "https://git.kernel.org/stable/c/18d704bdd809377dfd81a3c2f42426763b5da227"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4d6b9cac6df5e0cfef1a66b3edd7aebdb9e4b7e7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6160e756db81d6cb63e3e2952efcf6c5134be385"
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    "type" : "WEB",
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    "url" : "https://git.kernel.org/stable/c/c9158ceaf27780ef64534ad72f44ffde3f8ccc49"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dbb3f418a8665ffb0514e1a9520ab6a1c5d4d886"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fad4766a74220fe579c6fcaa10ba01c23529814f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-22T16:16:43Z"
  }
}