CVE-2026-94588

Description

In Proxmox pmg-api, an argument injection vulnerability exists in the package changelog retrieval functionality. This is caused by improper handling of user-supplied input passed to the underlying apt-get command when fetching package changelogs. It requires authentication but can be exploited in a CSRF-style attack.

Overview

State: PUBLISHED
Assigner (CNA): mitre
CVSS severity: MEDIUM
CVSS score: 4.4 / 10
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Effective score: 4.4 / 10 MEDIUM source: CNA overview
CWE(s): CWE-88
Reserved: 2026-09-21
Published: 2026-09-21 20:46 UTC
Last updated: 2026-09-21 20:46 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/94xxx/CVE-2026-94588.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-21 21:17:22 UTC
NVD last modified: 2026-09-21 21:17:22 UTC
NVD CVSS v3.1: 4.4 / 10 MEDIUM source: cve@mitre.org
NVD CVSS vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Exploitability subscore: 1.3 / 10
Impact subscore: 2.7 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-84163
Assigner: mitre
Published: Sep 21, 2026, 8:46:23 PM
Updated: Sep 21, 2026, 8:46:23 PM
EUVD base score (CVSS 3.1): 4.4 / 10
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
EUVD-reported EPSS: 0.0000
Vendors: Proxmox
Products: pmg-api (9.0.0 <9.0.3)
Aliases: GHSA-mpx3-wp2c-xm4m

ENISA description: In Proxmox pmg-api, an argument injection vulnerability exists in the package changelog retrieval functionality. This is caused by improper handling of user-supplied input passed to the underlying apt-get command when fetching package changelogs. It requires authentication but can be exploited in a CSRF-style attack.

EUVD references (1)

https://forum.proxmox.com/threads/proxmox-mail-gateway-security-advisories.149333/post-831054

Affected products (1)

Vendor	Product	Versions	Platforms
Proxmox	pmg-api	`0` (unaffected), `9.0.0` (affected)	—

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

https://forum.proxmox.com/threads/proxmox-mail-gateway-security-advisories.149333/post-831054

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (1)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://forum.proxmox.com/threads/proxmox-mail-gateway-security-advisories.149333/post-831054 cve@mitre.org

Remediations (10)

CVE-2026-94588 - Exploits & Severity - Feedly

web:feedly.com

Sep 21, 2026 at 2:05 PM CVE assignment NVD published the first details for CVE-2026-94588

2026-09-22 17:06 UTC
Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-09-22 17:06 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Access Microsoft Security Response Center's guide to address vulnerabilities, manage security risks, and keep your systems protected with the latest updates.

2026-09-22 17:06 UTC
NVD - Vulnerabilities

web:nvd.nist.gov

Vulnerabilities All vulnerabilities in the NVD have been assigned a CVE identifier and thus, abide by the definition below. CVE defines a vulnerability as: "A weakness in the computational logic (e.g., code) found in software and hardware components that, when exploited, results in a negative impact to confidentiality, integrity, or availability. Mitigation of the vulnerabilities in this ...

2026-09-22 17:06 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-22 17:06 UTC
CVE-2026-94588 - Argument Injection in Proxmox pmg-api…

web:vulmon.com

Vulnerability Summary An argument injection vulnerability in Proxmox pmg-api's package changelog retrieval functionality enables attackers to inject arguments into the underlying apt-get command. This occurs due to improper handling of user-supplied input. While authentication is required, the flaw may be exploited via a CSRF-style attack.

2026-09-22 17:06 UTC
What Is CVE Remediation in 2026? - aikido.dev

web:www.aikido.dev

None of these is a clean fix , which is why the decision on how to remediate depends on knowing what package versions are running in production and why. This post will cover how AI has accelerated CVE detection and discovery, the upgrade trap, what CVE remediation actually involves in 2026 , and how to solve the CVE remediation problem.

2026-09-22 17:06 UTC
National Vulnerability Database | NIST

web:www.nist.gov

NIST maintains the National Vulnerability Database (NVD), a repository of information on software and hardware flaws that can compromise computer security. This is a key piece of the nation's cybersecurity infrastructure.

2026-09-22 17:06 UTC
The 8 Best Automated Vulnerability Remediation Tools in 2026

web:www.openhands.dev

Compare 8 automated vulnerability remediation tools for 2026 on fixes, prioritization, integrations, and deployment control.

2026-09-22 17:06 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-22 17:06 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-94588.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://git.proxmox.com",
          "defaultStatus": "unaffected",
          "packageName": "pmg-api",
          "product": "pmg-api",
          "vendor": "Proxmox",
          "versions": [
            {
              "lessThan": "8.2.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "9.0.3",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Proxmox pmg-api, an argument injection vulnerability exists in the package changelog retrieval functionality. This is caused by improper handling of user-supplied input passed to the underlying apt-get command when fetching package changelogs. It requires authentication but can be exploited in a CSRF-style attack."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-88",
              "description": "CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-21T20:46:23.309Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://forum.proxmox.com/threads/proxmox-mail-gateway-security-advisories.149333/post-831054"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-94588",
    "datePublished": "2026-09-21T20:46:23.309Z",
    "dateReserved": "2026-09-21T20:46:22.983Z",
    "dateUpdated": "2026-09-21T20:46:23.309Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}