CVE-2021-20259

Credential disclosure via Proxmox API

Published Jun 7, 2021 · Updated Aug 3, 2024

Information disclosure in Foreman Fog Proxmox before 0.13.1 allows local users to read Proxmox credentials through the API. The Proxmox compute-resource API includes the resource password in responses under /api/compute_resources/ and /api/compute_resources/:id/ instead of filtering it. An authenticated user with view_compute_resource permission can retrieve the secret, exposing connected Proxmox resources to confidentiality, integrity, and availability compromise.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Foreman Fog Proxmox before 0.13.1 allows local users to read Proxmox credentials through the API. The Proxmox compute-resource API includes the resource password in responses under /api/compute_resources/ and /api/compute_resources/:id/ instead of filtering it. An authenticated user with view_compute_resource permission can retrieve the secret, exposing connected Proxmox resources to confidentiality, integrity, and availability compromise.

The record

CVE
CVE-2021-20259
Published
Jun 7, 2021
Updated
Aug 3, 2024
Vendor
The Foreman Project
Product
Foreman Fog Proxmox
Classifications
CWE-200, T1213
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before foreman_fog_proxmox 0.13.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Foreman Project · Foreman Fog Proxmoxversion=before foreman_fog_proxmox 0.13.1

Published CVSS scores

7.8GitLab Advisory DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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