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CVE-2026-12544

Redhat Satellite: unsafe deserialisation can lead to remote code execution

Risk score
48/100
CVSS
7.7 v3.1
Exploit chance (30 days)
0.2%
Published
1 Oct 2026

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What to know

What it is
A flaw was found in Foreman. The foreman-rake initialization logic in /usr/share/foreman/config/settings.rb contains a vulnerable code pattern where configuration data is processed through two distinct executable layers. This creates a multi-stage execution chain that allows for both Server-Side Template Injection (SS…
Affected
Redhat Satellite
Fix
Apply the vendor's security update; see the linked advisory.
Exploitation
No known exploitation

Story map

Story map: Redhat SatelliteTHE FLAWSTHE FIXCVE-2026-12544Unsafe deserialisation can leadto remote code executionCVSS 7.7 · EPSS 0%CVE-2026-96658Code injection can lead toremote code executionCVSS 8.8 · EPSS 1%CVE-2026-12540OS command injection can leadto remote code executionCVSS 8.2 · EPSS 1%CVE-2026-12541OS command injectionCVSS 8.2 · EPSS 1%FixApply the vendor's securityupdate; see the linked advisory.Who is exposedRedhat SatelliteAMBER · PATCH THIS WEEKRedhat SatelliteA flaw was found in Foreman.This vulnerability allows anauthenticated remote attackerwith low-level read permissionsto achieve arbitrary codeexecution on the underlyingserver. By manipulating the…Where it standsNo known exploitationCONNECTS TOSame weaknessUnsafe deserialisation (CWE-502)250 other warnings in 30 days →Same productEarlier Redhat Satellite warnings3 in the last 90 days →
Story map: the flaws, the fix, how it unfolded and what it connects to. Boxes link to the record or article.

At a glance

Redhat Satellite: Amber, patch this week. A flaw was found in Foreman. This vulnerability allows an authenticated remote attacker with low-level read permissions to achieve arbitrary code execution on the underlying server. By manipulating the permitted methods list within the template rendering engine, an attacker can bypass the safemode sandbox isolation an…

The flaws

  • CVE-2026-12544: Unsafe deserialisation can lead to remote code execution (CVSS 7.7 · EPSS 0%)
  • CVE-2026-96658: Code injection can lead to remote code execution (CVSS 8.8 · EPSS 1%)
  • CVE-2026-12540: OS command injection can lead to remote code execution (CVSS 8.2 · EPSS 1%)
  • CVE-2026-12541: OS command injection (CVSS 8.2 · EPSS 1%)

The fix

Fix: Apply the vendor's security update; see the linked advisory.

Who is exposed: Redhat Satellite

Where it stands

  • No known exploitation

Connects to

Why it is Yellow

  • CVSS 7.7 high

References

Original description

A flaw was found in Foreman. The foreman-rake initialization logic in /usr/share/foreman/config/settings.rb contains a vulnerable code pattern where configuration data is processed through two distinct executable layers. This creates a multi-stage execution chain that allows for both Server-Side Template Injection (SSTI) and insecure deserialization. This vulnerability can lead to remote code execution, total infrastructure compromise and supply chain risk.

Last activity 1 Oct 2026. Patch Forecast updates every hour.