Exposure of Sensitive Information to an Unauthorized Actor in foreman_fog_proxmox

published 2021-06-07 5 y ago modified 2026-06-17 4 mo ago also GHSA-f2rp-4rv7-fc95 , EUVD-2021-1313

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

A flaw was found in the Foreman project. The Proxmox compute resource exposes the password through the API to an authenticated local attacker with view_hosts permission. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Versions before foreman_fog_proxmox 0.13.1 are affected

Patch / fix

fixed in 2 links 2

rubygems foreman_fog_proxmox 0.13.1
theforeman foremanfogproxmox 0.13.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-20259 updated 2025-11-21 cvss 6.3

foreman: Proxmox compute resource credential leak to authenticated users

Red Hat Satellite 6 foreman, foreman-cli, foreman-ec2, foreman-gce, foreman-ovirt, foreman-vmware, +9 more
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P
GitHub	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
rubygems	foreman_fog_proxmox	<0.13.1	0.13.1

Affected products

n/a foreman

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

github.com /theforeman/foreman_fog_proxmox/pull/184/commits/b7e910bf61563f5d447c71b1b41e2a373a794d7b
web
bugzilla.redhat.com /show_bug.cgi?id=1932144
web, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-20259
advisory
github.com /theforeman/foreman_fog_proxmox
package
github.com /theforeman/foreman_fog_proxmox/releases/tag/v0.13.1
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary