CVE-2026-52927: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-c6h6-mmcc-x4qj
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CVSS 7.8
CWE-125
Published
Advisory Summary

CVE-2026-52927 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-125: Out-of-bounds Read) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product reads data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-52927 at a Glance

CVE Identifier CVE-2026-52927
GHSA Identifier GHSA-c6h6-mmcc-x4qj
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-125: Out-of-bounds Read
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-2026-52927

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-2026-52927, 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-125: Out-of-bounds Read, where the product reads 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: netfilter: ebtables: fix OOB read in compat_mtw_from_user Luxiao Xu says: The function compat_mtw_from_user() converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of the user-supplied match_size/target_size. When certain extensions are processed, the kernel-side translation logic may perform memory accesses based on the extension's expected size. If the user provides a size smaller than what the extension requires, it results in an out-of-bounds read as reported by KASAN. This fix introduces a check to ensure match_size is at least as large as the extension's required compatsize. This covers matches, watchers, and targets, while maintaining compatibility with standard targets. AFAIU this is relevant for matches that need to go though match->compat_from_user() call. Those that use plain memcpy with the user-provided size are ok because the caller checks that size vs the start of the next rule entry offset (which itself is checked vs. total size copied from userspace). The ->compat_from_user() callbacks assume they can read compatsize bytes, so they need this extra check. Based on an earlier patch from Luxiao Xu.

References

NVD — CVE-2026-52927 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52927
git.kernel.org/stable/c/21af4c0305... WEB
https://git.kernel.org/stable/c/21af4c030567d2e6c89bb927bc18b51fba52a400
git.kernel.org/stable/c/7ad0e463fc... WEB
https://git.kernel.org/stable/c/7ad0e463fc7eafae2141cc38054264636f8b3e94
git.kernel.org/stable/c/a27cb7325a... WEB
https://git.kernel.org/stable/c/a27cb7325a6c69970041c7f8541fafed5a1ea3ec
git.kernel.org/stable/c/bf8e8eac7e... WEB
https://git.kernel.org/stable/c/bf8e8eac7ede51dc318e06acef5a896dcbba7595
git.kernel.org/stable/c/d7a8fb6f10... WEB
https://git.kernel.org/stable/c/d7a8fb6f10d55a1c37b0bf8c20cca24dffd76e00
git.kernel.org/stable/c/dad9ebf810... WEB
https://git.kernel.org/stable/c/dad9ebf8107955bb54bd3f9cf22591b6ff37bac1
git.kernel.org/stable/c/f438d1786d... WEB
https://git.kernel.org/stable/c/f438d1786d657d57790c5d138d6db3fc9fdac392
git.kernel.org/stable/c/fcc4c043d1... WEB
https://git.kernel.org/stable/c/fcc4c043d137e7f1de4673dba1f3116e45377c67

Frequently Asked Questions

What is CVE-2026-52927?
CVE-2026-52927 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-125: Out-of-bounds Read.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-52927?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-52927?
CVE-2026-52927 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-2026-52927?
CVE-2026-52927 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-52927?
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-c6h6-mmcc-x4qj",
  "modified" : "2026-06-28T09:31:36Z",
  "published" : "2026-06-24T09:30:48Z",
  "aliases" : [ "CVE-2026-52927" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ebtables: fix OOB read in compat_mtw_from_user\n\nLuxiao Xu says:\n\n The function compat_mtw_from_user() converts ebtables extensions from\n 32-bit user structures to kernel native structures. However, it lacks\n proper validation of the user-supplied match_size/target_size.\n\n When certain extensions are processed, the kernel-side translation\n logic may perform memory accesses based on the extension's expected\n size. If the user provides a size smaller than what the extension\n requires, it results in an out-of-bounds read as reported by KASAN.\n\n This fix introduces a check to ensure match_size is at least as large\n as the extension's required compatsize. This covers matches, watchers,\n and targets, while maintaining compatibility with standard targets.\n\nAFAIU this is relevant for matches that need to go though\nmatch->compat_from_user() call.  Those that use plain memcpy with the\nuser-provided size are ok because the caller checks that size vs the\nstart of the next rule entry offset (which itself is checked vs. total\nsize copied from userspace).\n\nThe ->compat_from_user() callbacks assume they can read compatsize bytes,\nso they need this extra check.\n\nBased on an earlier patch from Luxiao Xu.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-52927"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/21af4c030567d2e6c89bb927bc18b51fba52a400"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7ad0e463fc7eafae2141cc38054264636f8b3e94"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a27cb7325a6c69970041c7f8541fafed5a1ea3ec"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bf8e8eac7ede51dc318e06acef5a896dcbba7595"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d7a8fb6f10d55a1c37b0bf8c20cca24dffd76e00"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dad9ebf8107955bb54bd3f9cf22591b6ff37bac1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f438d1786d657d57790c5d138d6db3fc9fdac392"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fcc4c043d137e7f1de4673dba1f3116e45377c67"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-24T08:16:22Z"
  }
}