Description
A vulnerability was detected in October CMS up to 4.3.4. This affects the function validateExternalImageHost of the file System/Classes/ResizeImages.php of the component SSRF Protection. The manipulation results in server-side request forgery. The attack may be launched remotely. The exploit is now public and may be used. Upgrading to version 4.3.5 is able to mitigate this issue. You should upgrade the affected component.
Published: 2026-09-28
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 28 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 28 Sep 2026 08:15:00 +0000

Type Values Removed Values Added
First Time appeared Octobercms
Octobercms october Cms
Vendors & Products Octobercms
Octobercms october Cms

Mon, 28 Sep 2026 06:45:00 +0000

Type Values Removed Values Added
Description A vulnerability was detected in October CMS up to 4.3.4. This affects the function validateExternalImageHost of the file System/Classes/ResizeImages.php of the component SSRF Protection. The manipulation results in server-side request forgery. The attack may be launched remotely. The exploit is now public and may be used. Upgrading to version 4.3.5 is able to mitigate this issue. You should upgrade the affected component.
Title October CMS SSRF Protection ResizeImages.php validateExternalImageHost server-side request forgery
First Time appeared October Cms
October Cms october Cms
Weaknesses CWE-918
CPEs cpe:2.3:a:october_cms:october_cms:*:*:*:*:*:*:*:*
Vendors & Products October Cms
October Cms october Cms
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'}


Subscriptions

October Cms October Cms
Octobercms October Cms
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-09-28T12:50:08.482Z

Reserved: 2026-09-27T10:41:52.940Z

Link: CVE-2026-101005

cve-icon Vulnrichment

Updated: 2026-09-28T12:50:02.834Z

cve-icon NVD

Status : Deferred

Published: 2026-09-28T07:17:19.827

Modified: 2026-09-28T15:16:04.793

Link: CVE-2026-101005

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-28T08:00:12Z

Weaknesses