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TI-2026-65046 Aliases CVE-2026-100909GHSA-5528-3vrx-6443

OctoberCMS ResizeImages.php getSourcePathForResize server-side request forgery

Priority HIGH 70CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00298 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed OctoberCMS: 4.3.5, 4.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—OctoberCMS4.1.0; 4.1.1; 4.1.2; 4.1.3; 4.1.4; 4.1.5; 4.1.6; 4.1.7; 4.1.8; 4.1.9; 4.1.10; 4.1.11; 4.1.12; 4.1.13; 4.1.14; 4.1.15; 4.1.16; 4.1.17; 4.1.18; 4.1.19; 4.2.0; 4.2.1; 4.2.2; 4.2.3; 4.2.4; 4.2.5; 4.2.6; 4.2.7; 4.2.8; 4.2.9; 4.2.10; 4.2.11; 4.2.12; 4.2.13; 4.2.14; 4.2.15; 4.2.16; 4.2.17; 4.2.18; 4.2.19; 4.2.20; 4.2.21; 4.2.22; 4.2.23; 4.2.24; 4.2.25; 4.3.0; 4.3.1; 4.3.2; 4.3.3; 4.3.44.3.5, 4.4.0Patch availableCNA
  • OctoberCMS Vendor— Affected 4.1.0; 4.1.1; 4.1.2; 4.1.3; 4.1.4; 4.1.5; 4.1.6; 4.1.7; 4.1.8; 4.1.9; 4.1.10; 4.1.11; 4.1.12; 4.1.13; 4.1.14; 4.1.15; 4.1.16; 4.1.17; 4.1.18; 4.1.19; 4.2.0; 4.2.1; 4.2.2; 4.2.3; 4.2.4; 4.2.5; 4.2.6; 4.2.7; 4.2.8; 4.2.9; 4.2.10; 4.2.11; 4.2.12; 4.2.13; 4.2.14; 4.2.15; 4.2.16; 4.2.17; 4.2.18; 4.2.19; 4.2.20; 4.2.21; 4.2.22; 4.2.23; 4.2.24; 4.2.25; 4.3.0; 4.3.1; 4.3.2; 4.3.3; 4.3.4 Fixed in 4.3.5, 4.4.0 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:octobercms:octobercms:*:*:*:*:*:*:*:*——October CMS
  • cpe:2.3:a:octobercms:octobercms:*:*:*:*:*:*:*:* Versions — — ·October CMS

Remediation

  • Fix · CNA OctoberCMS Fixed in 4.3.5, 4.4.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-100909
  2. 2026-10-03 Alias added: GHSA-5528-3vrx-6443

References

Exploit 1

Patch 2

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences