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9.9
CRITICAL CVSS 3.1
CVE-2026-96658
Foreman: foreman: arbitrary code execution via safemode sandbox bypass
Overview
Description

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 and execute unauthorized commands directly on the host system.

Details
INFO

Published Date :

Oct. 1, 2026, 5:17 p.m.

Last Modified :

Oct. 18, 2026, 7:16 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-96658 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
2 Redhat satellite
1 Theforeman foreman
: Total Affected Vendor : 2 | Products : 3
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 CRITICAL 53f830b8-0a3f-465b-8143-3b8a9948e749
CVSS 3.1 CRITICAL MITRE-CVE
CVSS 3.1 CRITICAL [email protected]
CVSS 3.1 HIGH [email protected]
Solution
Restrict templating engine access and update Foreman to prevent safemode bypass and RCE.
  • Update Foreman to the latest version.
  • Restrict access to the templating engine.
  • Review delegated method handling.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-96658.

URL Resource
https://access.redhat.com/errata/RHSA-2026:74503 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:74504 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:74505 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:74506 Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-96658 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2534185 Issue Tracking Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/10/07/2 Mailing List Patch Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-96658 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-96658 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-96658 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-96658 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Oct. 18, 2026

    Action Type Old Value New Value
    Changed Description A flaw was found in Foreman. An authenticated attacker with low-level permissions can achieve remote code execution (RCE) by bypassing the safemode sandbox within the templating engine. Due to improper handling of delegated methods, an attacker can append unauthorized functions to the allowed execution list, enabling them to run arbitrary commands on the hosting server. 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 and execute unauthorized commands directly on the host system.
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Removed CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    Added CWE CWE-94
  • Initial Analysis by [email protected]

    Oct. 16, 2026

    Action Type Old Value New Value
    Added CPE Configuration AND OR *cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:* versions from (including) 6.16 up to (excluding) 6.16.4 OR cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:* versions from (including) 6.17 up to (excluding) 6.17.12 OR cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.5 OR cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:theforeman:foreman:5.0.0:*:*:*:*:*:*:* *cpe:2.3:a:theforeman:foreman:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.1 *cpe:2.3:a:theforeman:foreman:3.19.0:*:*:*:*:*:*:* *cpe:2.3:a:theforeman:foreman:3.19.1:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:* versions from (including) 6.18 up to (excluding) 6.18.10 OR cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
    Added Reference Type Red Hat, Inc.: https://access.redhat.com/errata/RHSA-2026:74503 Types: Vendor Advisory
    Added Reference Type Red Hat, Inc.: https://access.redhat.com/errata/RHSA-2026:74504 Types: Vendor Advisory
    Added Reference Type Red Hat, Inc.: https://access.redhat.com/errata/RHSA-2026:74505 Types: Vendor Advisory
    Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/10/07/2 Types: Mailing List, Patch, Third Party Advisory
    Added Reference Type Red Hat, Inc.: https://access.redhat.com/errata/RHSA-2026:74506 Types: Vendor Advisory
    Added Reference Type Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-96658 Types: Vendor Advisory
    Added Reference Type Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2534185 Types: Issue Tracking, Vendor Advisory
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Oct. 07, 2026

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2026/10/07/2
  • CVE Modified by [email protected]

    Oct. 02, 2026

    Action Type Old Value New Value
    Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/96xxx/CVE-2026-96658.json">CVE-2026-96658</a>
    Added Reference https://access.redhat.com/errata/RHSA-2026:74505
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 02, 2026

    Action Type Old Value New Value
    Removed SSVC {'id': 'CVE-2026-96658', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-01T17:34:22.363598Z'}
    Added SSVC {'id': 'CVE-2026-96658', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-01T00:00:00+00:00'}
  • CVE Modified by [email protected]

    Oct. 02, 2026

    Action Type Old Value New Value
    Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/96xxx/CVE-2026-96658.json">CVE-2026-96658</a>
    Added Reference https://access.redhat.com/errata/RHSA-2026:74504
    Added Reference https://access.redhat.com/errata/RHSA-2026:74506
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 01, 2026

    Action Type Old Value New Value
    Added CWE CWE-94
    Added SSVC {'id': 'CVE-2026-96658', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-01T17:34:22.363598Z'}
  • New CVE Received by [email protected]

    Oct. 01, 2026

    Action Type Old Value New Value
    Added Description A flaw was found in Foreman. An authenticated attacker with low-level permissions can achieve remote code execution (RCE) by bypassing the safemode sandbox within the templating engine. Due to improper handling of delegated methods, an attacker can append unauthorized functions to the allowed execution list, enabling them to run arbitrary commands on the hosting server.
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/96xxx/CVE-2026-96658.json">CVE-2026-96658</a>
    Added Reference https://access.redhat.com/errata/RHSA-2026:74503
    Added Reference https://access.redhat.com/security/cve/CVE-2026-96658
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2534185
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 9.9
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact