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CVE-2026-100909— OctoberCMS ResizeImages.php getSourcePathForResize server-side request forgery

Quick assessment

Affected
n/a OctoberCMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 OctoberCMS 4.1.19、4.2.25 和 4.3.4 及更早版本中发现了一个安全漏洞。受影响的元素是文件 中的 函数。对参数 的操纵可导致服务器端请求伪造（SSRF）。该攻击可远程发起。该漏洞的利用方法已被公开，可能被恶意利用。升级到版本 4.3.5 和 4.4.0 即可修复此问题。相关补丁的提交哈希为 。建议立即升级受影响的组件。

CVSS 7.3 · High
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I. Basic Information for CVE-2026-100909

Vulnerability Information
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Vulnerability Title
OctoberCMS ResizeImages.php getSourcePathForResize server-side request forgery
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- OctoberCMS 4.1.0 cpe:2.3:a:octobercms:octobercms:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-100909

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III. Intelligence Information for CVE-2026-100909

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Other References for CVE-2026-100909 (7)

Same Patch Batch · n/a · 2026-09-28 · 10 CVEs total

CVE-2026-100908 7.5 HIGH Eyeplus p2pcam HTTP stack-based overflow
CVE-2026-101067 7.3 HIGH dbgate save-uploaded-file Endpoint files.js saveUploadedFile path traversal
CVE-2026-101066 7.3 HIGH dbgate Archive Link Creation archive.js createLink path traversal
CVE-2026-101005 7.3 HIGH October CMS SSRF Protection ResizeImages.php validateExternalImageHost server-side request
CVE-2026-101069 6.5 MEDIUM dbgate Export databaseConnections.js exportModelSql path traversal
CVE-2026-101068 6.5 MEDIUM dbgate Create Connection Endpoint zipJsonLinesData.js zipJsonLinesData path traversal
CVE-2026-101070 5.3 MEDIUM dbgate Files Endpoint runners.js files path traversal
CVE-2026-100907 5.3 MEDIUM Eyeplus p2pcam Service snapshot information disclosure
CVE-2026-100906 5.3 MEDIUM Eyeplus ONVIF Device GetUsers information disclosure

IV. Related Vulnerabilities

Same vendor: n/a
Same weakness: CWE-918

V. Comments for CVE-2026-100909

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