CVE-2026-89556: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-whm7-hr5x-2m9w
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Advisory Summary

CVE-2026-89556 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89556 at a Glance

CVE Identifier CVE-2026-89556
GHSA Identifier GHSA-whm7-hr5x-2m9w
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-89556

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-2026-89556, 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: module: validate string table section types In elf_validity_cache_sechdrs, section sizes and offsets are validated, unless the section type is SHT_NULL or SHT_NOBITS. Later, elf_validity_cache_secstrings and elf_validity_cache_index_str access the section name table (.shstrtab) and symbol string table (.strtab) headers without first ensuring that their types are SHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has not been validated and may reference out-of-bounds memory when dereferenced in elf_validity_cache_secstrings or elf_validity_cache_strtab. Validate that both string section headers are of type SHT_STRTAB before caching them.

References

NVD — CVE-2026-89556 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89556
git.kernel.org/stable/c/50d0aa7d25... WEB
https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f
git.kernel.org/stable/c/9a5ff45689... WEB
https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423
git.kernel.org/stable/c/e4496dda2c... WEB
https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee

Frequently Asked Questions

What is CVE-2026-89556?
CVE-2026-89556 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-2026-89556?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89556?
CVE-2026-89556 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89556?
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-whm7-hr5x-2m9w",
  "modified" : "2026-09-11T21:31:31Z",
  "published" : "2026-09-11T21:31:31Z",
  "aliases" : [ "CVE-2026-89556" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmodule: validate string table section types\n\nIn elf_validity_cache_sechdrs, section sizes and offsets are validated,\nunless the section type is SHT_NULL or SHT_NOBITS.\n\nLater, elf_validity_cache_secstrings and elf_validity_cache_index_str\naccess the section name table (.shstrtab) and symbol string table\n(.strtab) headers without first ensuring that their types are\nSHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has\nnot been validated and may reference out-of-bounds memory when\ndereferenced in elf_validity_cache_secstrings or\nelf_validity_cache_strtab.\n\nValidate that both string section headers are of type SHT_STRTAB before\ncaching them.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89556"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:39Z"
  }
}