CVE-2026-12540
Foreman: command injection in foreman-rake errors:fetch_log via request_id parameter
Description
A flaw was found in Foreman. A command injection vulnerability exists in the foreman-rake errors:fetch_log task. The request_id parameter is passed to an underlying system command (typically grep) without adequate shell neutralization. While the task is intended to fetch specific log entries, an attacker with sudo permissions to execute this rake task can inject shell metacharacters (such as ;, ", or |) to break out of the intended command and execute arbitrary code.
INFO
Published Date :
Oct. 1, 2026, 5:17 p.m.
Last Modified :
Oct. 8, 2026, 1:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-12540
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Foreman to the latest version.
- Apply vendor-specific security patches.
- Review and sanitize user inputs in rake tasks.
- Restrict sudo access for rake tasks.
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-2026-12540.
| 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-2026-12540 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2489969 | Issue Tracking Mitigation Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/10/07/9 | 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-2026-12540 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-2026-12540
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-2026-12540 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-12540 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.
-
Initial Analysis by [email protected]
Oct. 08, 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:-:*:*:*:*:*:*:* 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 CPE Configuration OR *cpe:2.3:a:redhat:satellite:6.0:*:*:*:*:*:*:* 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 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-2026-12540 Types: Vendor Advisory Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/10/07/9 Types: Third Party Advisory Added Reference Type Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2489969 Types: Issue Tracking, Mitigation, Vendor Advisory Changed Reference Type nvd-ai-agent-0.4.0-gemma-4-31B-it: https://bugzilla.redhat.com/show_bug.cgi?id=2489969 Types: Issue Tracking, Vendor Advisory nvd-ai-agent-0.4.0-gemma-4-31B-it: https://bugzilla.redhat.com/show_bug.cgi?id=2489969 Types: Issue Tracking, Issue Tracking, Mitigation, Vendor Advisory, 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/2026/10/07/9 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 06, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-12540', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-06T01:48:01.315252Z'} -
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/2026/12xxx/CVE-2026-12540.json">CVE-2026-12540</a> Added Reference https://access.redhat.com/errata/RHSA-2026:74505 -
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/2026/12xxx/CVE-2026-12540.json">CVE-2026-12540</a> Added Reference https://access.redhat.com/errata/RHSA-2026:74504 Added Reference https://access.redhat.com/errata/RHSA-2026:74506 -
New CVE Received by [email protected]
Oct. 01, 2026
Action Type Old Value New Value Added Description A flaw was found in Foreman. A command injection vulnerability exists in the foreman-rake errors:fetch_log task. The request_id parameter is passed to an underlying system command (typically grep) without adequate shell neutralization. While the task is intended to fetch specific log entries, an attacker with sudo permissions to execute this rake task can inject shell metacharacters (such as ;, ", or |) to break out of the intended command and execute arbitrary code. Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-78 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/12xxx/CVE-2026-12540.json">CVE-2026-12540</a> Added Reference https://access.redhat.com/errata/RHSA-2026:74503 Added Reference https://access.redhat.com/security/cve/CVE-2026-12540 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2489969