CVE-2026-74752: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-3494-mfxc-798j
Share
CVSS 9.8
Published
Advisory Summary

CVE-2026-74752 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-2026-74752 at a Glance

CVE Identifier CVE-2026-74752
GHSA Identifier GHSA-3494-mfxc-798j
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-2026-74752

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-2026-74752, 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: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or CHUNKS list can then reach association consumers with lengths or identifiers that were never validated against the local backing arrays. A forged RANDOM length can cause out-of-bounds reads during key-vector construction. A forged HMAC identifier also caused a 32-byte write past a zero-length AUTH chunk, providing a primitive for a local privilege escalation chain. Validate the cookie's RANDOM, HMACS, and CHUNKS parameters at the cookie trust boundary before copying them into the association. Reject invalid types, malformed lengths, unsupported HMAC identifiers, HMAC lists without SHA1, and forbidden chunk ids.

References

NVD — CVE-2026-74752 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74752
git.kernel.org/stable/c/3dbb44d88b... WEB
https://git.kernel.org/stable/c/3dbb44d88b1e94dd31fe43588af7437b34b44d56
git.kernel.org/stable/c/88619b117b... WEB
https://git.kernel.org/stable/c/88619b117be1daf633ce32210570ce35a0bd1c98

Frequently Asked Questions

What is CVE-2026-74752?
CVE-2026-74752 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-2026-74752?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74752?
CVE-2026-74752 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-2026-74752?
CVE-2026-74752 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74752?
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 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3494-mfxc-798j",
  "modified" : "2026-08-27T06:31:31Z",
  "published" : "2026-08-27T06:31:31Z",
  "aliases" : [ "CVE-2026-74752" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: validate cookie AUTH state before use\n\nWhen cookie authentication is disabled, COOKIE_ECHO restores fixed-size\nAUTH fields directly from peer-controlled cookie bytes.  A forged RANDOM\nlength, HMAC list, or CHUNKS list can then reach association consumers\nwith lengths or identifiers that were never validated against the local\nbacking arrays.\n\nA forged RANDOM length can cause out-of-bounds reads during key-vector\nconstruction.  A forged HMAC identifier also caused a 32-byte write past\na zero-length AUTH chunk, providing a primitive for a local privilege\nescalation chain.\n\nValidate the cookie's RANDOM, HMACS, and CHUNKS parameters at the cookie\ntrust boundary before copying them into the association.  Reject invalid\ntypes, malformed lengths, unsupported HMAC identifiers, HMAC lists\nwithout SHA1, and forbidden chunk ids.",
  "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-2026-74752"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3dbb44d88b1e94dd31fe43588af7437b34b44d56"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/88619b117be1daf633ce32210570ce35a0bd1c98"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-26T15:16:54Z"
  }
}