CVE-2026-49134: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-gg57-wg6f-c8vg
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CVSS 7.1
CWE-377
Published
Advisory Summary

CVE-2026-49134 is a HIGH (CVSS 7.1) security vulnerability vulnerability (CWE-377: Insecure Temporary File) affecting Software libraries in the Maven ecosystem. The weakness occurs when creating and using insecure temporary files can leave application and system data vulnerable to attack.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-49134 at a Glance

CVE Identifier CVE-2026-49134
GHSA Identifier GHSA-gg57-wg6f-c8vg
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-377: Insecure Temporary File
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:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2026-49134

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-2026-49134, 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-377: Insecure Temporary File, where creating and using insecure temporary files can leave application and system data vulnerable to attack. 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

CodexBar prior to 0.32.0 contains a privilege escalation vulnerability in the CLI installer that allows local attackers to execute arbitrary commands as root by exploiting a race condition in temporary file handling. The installer creates a temporary file with mktemp, writes a privileged shell payload into it, and executes it with administrator privileges via bash, allowing a same-user local process to rewrite the installer body before the administrator prompt is approved, causing attacker-controlled commands to run as root.

References

NVD — CVE-2026-49134 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49134
Software Source Repository REPOSITORY
https://github.com/steipete/CodexBar/pull/1222
Security Fix Commit FIX COMMIT
https://github.com/steipete/CodexBar/commit/dbc944d46cd4cf7877d1ca47c44556fe573b46e8
Software Release RELEASE
https://github.com/steipete/CodexBar/releases/tag/v0.32.0
www.vulncheck.com/advisories/codexbar... WEB
https://www.vulncheck.com/advisories/codexbar-privilege-escalation-via-cli-installer-temp-file

Frequently Asked Questions

What is CVE-2026-49134?
CVE-2026-49134 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-377: Insecure Temporary File.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-49134?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-49134?
CVE-2026-49134 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-49134?
CVE-2026-49134 is classified under CWE-377: Insecure Temporary File (Creating and using insecure temporary files can leave application and system data vulnerable to attack.).
How can I check Maven dependencies for CVE-2026-49134?
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-gg57-wg6f-c8vg",
  "modified" : "2026-06-01T21:30:45Z",
  "published" : "2026-06-01T21:30:44Z",
  "aliases" : [ "CVE-2026-49134" ],
  "details" : "CodexBar prior to 0.32.0 contains a privilege escalation vulnerability in the CLI installer that allows local attackers to execute arbitrary commands as root by exploiting a race condition in temporary file handling. The installer creates a temporary file with mktemp, writes a privileged shell payload into it, and executes it with administrator privileges via bash, allowing a same-user local process to rewrite the installer body before the administrator prompt is approved, causing attacker-controlled commands to run as root.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-49134"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/steipete/CodexBar/pull/1222"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/steipete/CodexBar/commit/dbc944d46cd4cf7877d1ca47c44556fe573b46e8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/steipete/CodexBar/releases/tag/v0.32.0"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/codexbar-privilege-escalation-via-cli-installer-temp-file"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-377" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-01T21:16:46Z"
  }
}