CVE-2026-16118: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-cp7g-r78m-cc2g
Share
CVSS 7.1
CWE-122
Published
Advisory Summary

CVE-2026-16118 is a HIGH (CVSS 7.1) security vulnerability vulnerability (CWE-122: Heap-based Buffer Overflow) affecting Software libraries in the Maven ecosystem. The weakness occurs when a heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().. Remediation is available in the latest vendor maintenance releases.

CVE-2026-16118 at a Glance

CVE Identifier CVE-2026-16118
GHSA Identifier GHSA-cp7g-r78m-cc2g
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-122: Heap-based Buffer Overflow
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-16118

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-2026-16118, 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-122: Heap-based Buffer Overflow, where a heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). 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

A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption.

References

NVD — CVE-2026-16118 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16118
gitlab.freedesktop.org/xdg/xdgmime/-/work_... WEB
https://gitlab.freedesktop.org/xdg/xdgmime/-/work_items/41
access.redhat.com/errata/rhsa-2026:79... WEB
https://access.redhat.com/errata/RHSA-2026:79357
access.redhat.com/errata/rhsa-2026:76... WEB
https://access.redhat.com/errata/RHSA-2026:76042
access.redhat.com/errata/rhsa-2026:75... WEB
https://access.redhat.com/errata/RHSA-2026:75660
access.redhat.com/errata/rhsa-2026:75... WEB
https://access.redhat.com/errata/RHSA-2026:75659
access.redhat.com/errata/rhsa-2026:75... WEB
https://access.redhat.com/errata/RHSA-2026:75658
access.redhat.com/errata/rhsa-2026:75... WEB
https://access.redhat.com/errata/RHSA-2026:75657
access.redhat.com/errata/rhsa-2026:75... WEB
https://access.redhat.com/errata/RHSA-2026:75655
access.redhat.com/errata/rhsa-2026:75... WEB
https://access.redhat.com/errata/RHSA-2026:75654
access.redhat.com/errata/rhsa-2026:75... WEB
https://access.redhat.com/errata/RHSA-2026:75652
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74771
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74688
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74687
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74685
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74683
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74681
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74679
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74678
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74677
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2501732
Software Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-16118
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82888
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82857
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82415
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82372
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82371
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82368
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82354
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82347
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82336
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82322
access.redhat.com/errata/rhsa-2026:82... WEB
https://access.redhat.com/errata/RHSA-2026:82304
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https://access.redhat.com/errata/RHSA-2026:82066
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https://access.redhat.com/errata/RHSA-2026:82061
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https://access.redhat.com/errata/RHSA-2026:82059
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https://access.redhat.com/errata/RHSA-2026:81127
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https://access.redhat.com/errata/RHSA-2026:80756
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https://access.redhat.com/errata/RHSA-2026:73930
access.redhat.com/errata/rhsa-2026:73... WEB
https://access.redhat.com/errata/RHSA-2026:73929
access.redhat.com/errata/rhsa-2026:73... WEB
https://access.redhat.com/errata/RHSA-2026:73909
access.redhat.com/errata/rhsa-2026:73... WEB
https://access.redhat.com/errata/RHSA-2026:73859
access.redhat.com/errata/rhsa-2026:72... WEB
https://access.redhat.com/errata/RHSA-2026:72502
access.redhat.com/errata/rhsa-2026:72... WEB
https://access.redhat.com/errata/RHSA-2026:72476
access.redhat.com/errata/rhsa-2026:72... WEB
https://access.redhat.com/errata/RHSA-2026:72475
access.redhat.com/errata/rhsa-2026:72... WEB
https://access.redhat.com/errata/RHSA-2026:72470
access.redhat.com/errata/rhsa-2026:72... WEB
https://access.redhat.com/errata/RHSA-2026:72399
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https://access.redhat.com/errata/RHSA-2026:72395
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https://access.redhat.com/errata/RHSA-2026:71405
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https://access.redhat.com/errata/RHSA-2026:71404
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https://access.redhat.com/errata/RHSA-2026:71403
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https://access.redhat.com/errata/RHSA-2026:70636
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https://access.redhat.com/errata/RHSA-2026:67956
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https://access.redhat.com/errata/RHSA-2026:66451
access.redhat.com/errata/rhsa-2026:64... WEB
https://access.redhat.com/errata/RHSA-2026:64800
access.redhat.com/errata/rhsa-2026:64... WEB
https://access.redhat.com/errata/RHSA-2026:64799
access.redhat.com/errata/rhsa-2026:74... WEB
https://access.redhat.com/errata/RHSA-2026:74674
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https://access.redhat.com/errata/RHSA-2026:74463
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https://access.redhat.com/errata/RHSA-2026:74462
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https://access.redhat.com/errata/RHSA-2026:74461
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https://access.redhat.com/errata/RHSA-2026:74460
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https://access.redhat.com/errata/RHSA-2026:74459
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https://access.redhat.com/errata/RHSA-2026:74458
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https://access.redhat.com/errata/RHSA-2026:74450
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https://access.redhat.com/errata/RHSA-2026:74365
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https://access.redhat.com/errata/RHSA-2026:74364
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https://access.redhat.com/errata/RHSA-2026:74363
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https://access.redhat.com/errata/RHSA-2026:74362
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https://access.redhat.com/errata/RHSA-2026:74361
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Frequently Asked Questions

What is CVE-2026-16118?
CVE-2026-16118 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-122: Heap-based Buffer Overflow.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-16118?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-16118?
CVE-2026-16118 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2026-16118?
CVE-2026-16118 is classified under CWE-122: Heap-based Buffer Overflow (A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().).
How can I check Maven dependencies for CVE-2026-16118?
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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  "published" : "2026-07-17T21:31:44Z",
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    "url" : "https://access.redhat.com/errata/RHSA-2026:74361"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:74360"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:74359"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:73962"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:73961"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:73960"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:73959"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-122" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-17T20:17:16Z"
  }
}