CVE-2026-100909

HighCVSS 7.3

Published: 28/09/2026(UTC)Updated: 28/09/2026(UTC)Translated: 28/09/2026(UTC)NVD NIST

Summary

Vulnerability in OctoberCMS up to versions 4.1.19/4.2.25/4.3.4 in the getSourcePathForResize function of modules/system/classes/ResizeImages.php. Manipulation of the realSourcePath argument leads to server-side request forgery (SSRF). Remote attack possible, exploit public. Upgrading to 4.3.5 or 4.4.0 resolves the issue.

Risk Assessment

An attacker can exploit SSRF to access internal server resources, potentially leading to data leakage or further attacks.

Recommendation

Upgrade OctoberCMS to version 4.3.5 or 4.4.0 which contains the fix.

Other vulnerabilities in OctoberCMS

CVE-2017-16244High
OctoberCMS 1.0.426 is vulnerable to Cross-Site Request Forgery (CSRF) due to improper validation of CSRF tokens for postback handling, allowing an attacker to take over the victim's account. The attack bypasses a protection mechanism involving X-CSRF headers and CSRF tokens via a certain _handler postback variable.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS