CVE-2026-68376: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-55hr-9mvf-6m8f
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CVSS 8.1
CWE-787
Published
Advisory Summary

CVE-2026-68376 is a HIGH (CVSS 8.1) security vulnerability vulnerability (CWE-787: Out-of-bounds Write) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product writes data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-68376 at a Glance

CVE Identifier CVE-2026-68376
GHSA Identifier GHSA-55hr-9mvf-6m8f
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-787: Out-of-bounds Write
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.1

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
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-2026-68376

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-2026-68376, 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 CWE-787: Out-of-bounds Write, where the product writes data past the end, or before the beginning, of the intended buffer. 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: fix auth_hmacs array size in struct sctp_cookie The auth_hmacs array in struct sctp_cookie is supposed to store a complete SCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr followed by N HMAC identifiers. However, the array size was calculated using an extra 2 bytes instead of sizeof(struct sctp_paramhdr), which is 4 bytes. When four HMAC identifiers are configured, the HMAC-ALGO parameter stored in the endpoint is larger than the auth_hmacs buffer in the cookie. As a result, sctp_association_init() copies beyond the end of auth_hmacs when initializing the association, corrupting the adjacent auth_chunks field. This can lead to an invalid HMAC identifier being accepted and later cause an out-of-bounds read in sctp_auth_get_hmac(). Fix the array size calculation by including the full SCTP parameter header size.

References

NVD — CVE-2026-68376 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68376
git.kernel.org/stable/c/0528485f27... WEB
https://git.kernel.org/stable/c/0528485f27016a42804abe01aa61b39d85fa803e
git.kernel.org/stable/c/0b4414e43e... WEB
https://git.kernel.org/stable/c/0b4414e43e0861d67276031cc21401d7e87de3da
git.kernel.org/stable/c/317731d01b... WEB
https://git.kernel.org/stable/c/317731d01b03c529809df36d3a7d149677a8729d
git.kernel.org/stable/c/3aa40c3bcc... WEB
https://git.kernel.org/stable/c/3aa40c3bccac2312ea7cf97f329190637f972b5d
git.kernel.org/stable/c/a8d20ba0ab... WEB
https://git.kernel.org/stable/c/a8d20ba0ab518c9ccbcde258f25fc1ee6e51d5db
git.kernel.org/stable/c/d0a59ba585... WEB
https://git.kernel.org/stable/c/d0a59ba58578e2b330fff80a44fe519f3ba7d8c7
git.kernel.org/stable/c/e0b5252a59... WEB
https://git.kernel.org/stable/c/e0b5252a59383b77d1b8dbeda00b7184dd95f4d3
git.kernel.org/stable/c/ee5e65964f... WEB
https://git.kernel.org/stable/c/ee5e65964f456adfe14d526fba0bd055de98ecf3

Frequently Asked Questions

What is CVE-2026-68376?
CVE-2026-68376 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-787: Out-of-bounds Write.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-68376?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-68376?
CVE-2026-68376 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-68376?
CVE-2026-68376 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-68376?
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-55hr-9mvf-6m8f",
  "modified" : "2026-08-19T18:32:17Z",
  "published" : "2026-08-10T15:33:48Z",
  "aliases" : [ "CVE-2026-68376" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: fix auth_hmacs array size in struct sctp_cookie\n\nThe auth_hmacs array in struct sctp_cookie is supposed to store a complete\nSCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr\nfollowed by N HMAC identifiers.\n\nHowever, the array size was calculated using an extra 2 bytes instead of\nsizeof(struct sctp_paramhdr), which is 4 bytes. When four HMAC identifiers\nare configured, the HMAC-ALGO parameter stored in the endpoint is larger\nthan the auth_hmacs buffer in the cookie.\n\nAs a result, sctp_association_init() copies beyond the end of auth_hmacs\nwhen initializing the association, corrupting the adjacent auth_chunks\nfield. This can lead to an invalid HMAC identifier being accepted and later\ncause an out-of-bounds read in sctp_auth_get_hmac().\n\nFix the array size calculation by including the full SCTP parameter header\nsize.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68376"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0528485f27016a42804abe01aa61b39d85fa803e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0b4414e43e0861d67276031cc21401d7e87de3da"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/317731d01b03c529809df36d3a7d149677a8729d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3aa40c3bccac2312ea7cf97f329190637f972b5d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a8d20ba0ab518c9ccbcde258f25fc1ee6e51d5db"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d0a59ba58578e2b330fff80a44fe519f3ba7d8c7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e0b5252a59383b77d1b8dbeda00b7184dd95f4d3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ee5e65964f456adfe14d526fba0bd055de98ecf3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-787" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-10T13:20:30Z"
  }
}