CVE-2026-91202: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-2g9g-mfvg-w359
Share
CVSS 6.1
CWE-61
Published
Advisory Summary

CVE-2026-91202 is a MODERATE (CVSS 6.1) security vulnerability vulnerability (CWE-61: UNIX Symbolic Link (Symlink) Following) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. this could allow an attacker to cause the product to operate on unauthorized files.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-91202 at a Glance

CVE Identifier CVE-2026-91202
GHSA Identifier GHSA-2g9g-mfvg-w359
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-61: UNIX Symbolic Link (Symlink) Following
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/S:U/C:L/I:H/A:L).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity High (I:H)
Availability Low (A:L)

How to Fix CVE-2026-91202

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-2026-91202, 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-61: UNIX Symbolic Link (Symlink) Following, where the product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. this could allow an attacker to cause the product to operate on unauthorized files. 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 cockpit-files. A low-privileged local user can exploit this vulnerability by crafting a directory containing a symbolic link (symlink) and then using the privileged "Paste as owner" function. This allows for arbitrary file ownership changes outside the intended pasted directory, leading to a compromise of data integrity. In some cases, this could also lead to reduced confidentiality if the new ownership grants unauthorized read access. Exploitation requires user interaction to select a non-original owner during the paste operation.

References

NVD — CVE-2026-91202 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91202
access.redhat.com/errata/rhsa-2026:84... WEB
https://access.redhat.com/errata/RHSA-2026:84595
Software Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-91202
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2465834

Frequently Asked Questions

What is CVE-2026-91202?
CVE-2026-91202 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-61: UNIX Symbolic Link (Symlink) Following.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-91202?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-91202?
CVE-2026-91202 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L.
What CWE is associated with CVE-2026-91202?
CVE-2026-91202 is classified under CWE-61: UNIX Symbolic Link (Symlink) Following (The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.).
How can I check Maven dependencies for CVE-2026-91202?
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-2g9g-mfvg-w359",
  "modified" : "2026-10-19T06:32:23Z",
  "published" : "2026-09-18T21:32:27Z",
  "aliases" : [ "CVE-2026-91202" ],
  "details" : "A flaw was found in cockpit-files. A low-privileged local user can exploit this vulnerability by crafting a directory containing a symbolic link (symlink) and then using the privileged \"Paste as owner\" function. This allows for arbitrary file ownership changes outside the intended pasted directory, leading to a compromise of data integrity. In some cases, this could also lead to reduced confidentiality if the new ownership grants unauthorized read access. Exploitation requires user interaction to select a non-original owner during the paste operation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-91202"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:84595"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-91202"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2465834"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-61" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-18T20:17:29Z"
  }
}