A vulnerability was found in OctoberCMS up to 4.1.19/4.2.25/4.3.4. The impacted element is the function getSourcePathForResize of the file modules/system/classes/ResizeImages.php. The manipulation of the argument realSourcePath results in server-side request forgery. The attack may be performed from remote. The exploit has been made public and could be used. Upgrading to version 4.3.5 and 4.4.0 is sufficient to resolve this issue. The patch is identified as 0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58. The affected component should be upgraded.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Octobercms Subscribe
Octobercms Subscribe

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/0xGenesi/CVE/blob/main/October_CMS_Stream_Wrapper_Injection.md cve-icon cve-icon
https://github.com/octobercms/october/commit/0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58 cve-icon cve-icon
https://github.com/octobercms/october/releases/tag/v4.3.5 cve-icon cve-icon
https://github.com/octobercms/october/security/advisories/GHSA-2xmm-m4wv-3fjh cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-100909 cve-icon cve-icon
https://vuldb.com/submit/919993 cve-icon cve-icon
https://vuldb.com/vuln/410869 cve-icon cve-icon
https://vuldb.com/vuln/410869/cti cve-icon cve-icon
History

Mon, 28 Sep 2026 04:45:00 +0000

Type Values Removed Values Added
Description A vulnerability was found in OctoberCMS up to 4.1.19/4.2.25/4.3.4. The impacted element is the function getSourcePathForResize of the file modules/system/classes/ResizeImages.php. The manipulation of the argument realSourcePath results in server-side request forgery. The attack may be performed from remote. The exploit has been made public and could be used. Upgrading to version 4.3.5 and 4.4.0 is sufficient to resolve this issue. The patch is identified as 0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58. The affected component should be upgraded.
Title OctoberCMS ResizeImages.php getSourcePathForResize server-side request forgery
First Time appeared Octobercms
Octobercms octobercms
Weaknesses CWE-918
CPEs cpe:2.3:a:octobercms:octobercms:*:*:*:*:*:*:*:*
Vendors & Products Octobercms
Octobercms octobercms
References
Metrics cvssV2_0

{'score': 7.5, 'vector': 'AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 7.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-09-28T04:30:10.101Z

Reserved: 2026-09-27T10:19:16.000Z

Link: CVE-2026-100909

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-28T05:16:30.067

Modified: 2026-09-28T05:16:30.067

Link: CVE-2026-100909

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-28T05:30:07Z

Weaknesses