OctoberCMS ResizeImages.php getSourcePathForResize server-side request forgery

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-100909
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-28 05:16:30 UTC
Updated2026-09-28 15:16:04 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 5.5 MEDIUM from [email protected]

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.002980000 probability, percentile 0.201710000 (date 2026-09-29)

Problem Types: CWE-918 | CWE-918 Server-Side Request Forgery

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.5MEDIUMCVSS: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/C...
4.0CNADECLARED6.9MEDIUMCVSS: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
3.1[email protected]Secondary7.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED7.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.0CNADECLARED7.3HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P
2.0CNADECLARED7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na OctoberCMS affected 4.1.0 Not specified
CNA Na OctoberCMS affected 4.1.1 Not specified
CNA Na OctoberCMS affected 4.1.2 Not specified
CNA Na OctoberCMS affected 4.1.3 Not specified
CNA Na OctoberCMS affected 4.1.4 Not specified
CNA Na OctoberCMS affected 4.1.5 Not specified
CNA Na OctoberCMS affected 4.1.6 Not specified
CNA Na OctoberCMS affected 4.1.7 Not specified
CNA Na OctoberCMS affected 4.1.8 Not specified
CNA Na OctoberCMS affected 4.1.9 Not specified
CNA Na OctoberCMS affected 4.1.10 Not specified
CNA Na OctoberCMS affected 4.1.11 Not specified
CNA Na OctoberCMS affected 4.1.12 Not specified
CNA Na OctoberCMS affected 4.1.13 Not specified
CNA Na OctoberCMS affected 4.1.14 Not specified
CNA Na OctoberCMS affected 4.1.15 Not specified
CNA Na OctoberCMS affected 4.1.16 Not specified
CNA Na OctoberCMS affected 4.1.17 Not specified
CNA Na OctoberCMS affected 4.1.18 Not specified
CNA Na OctoberCMS affected 4.1.19 Not specified
CNA Na OctoberCMS affected 4.2.0 Not specified
CNA Na OctoberCMS affected 4.2.1 Not specified
CNA Na OctoberCMS affected 4.2.2 Not specified
CNA Na OctoberCMS affected 4.2.3 Not specified
CNA Na OctoberCMS affected 4.2.4 Not specified
CNA Na OctoberCMS affected 4.2.5 Not specified
CNA Na OctoberCMS affected 4.2.6 Not specified
CNA Na OctoberCMS affected 4.2.7 Not specified
CNA Na OctoberCMS affected 4.2.8 Not specified
CNA Na OctoberCMS affected 4.2.9 Not specified
CNA Na OctoberCMS affected 4.2.10 Not specified
CNA Na OctoberCMS affected 4.2.11 Not specified
CNA Na OctoberCMS affected 4.2.12 Not specified
CNA Na OctoberCMS affected 4.2.13 Not specified
CNA Na OctoberCMS affected 4.2.14 Not specified
CNA Na OctoberCMS affected 4.2.15 Not specified
CNA Na OctoberCMS affected 4.2.16 Not specified
CNA Na OctoberCMS affected 4.2.17 Not specified
CNA Na OctoberCMS affected 4.2.18 Not specified
CNA Na OctoberCMS affected 4.2.19 Not specified
CNA Na OctoberCMS affected 4.2.20 Not specified
CNA Na OctoberCMS affected 4.2.21 Not specified
CNA Na OctoberCMS affected 4.2.22 Not specified
CNA Na OctoberCMS affected 4.2.23 Not specified
CNA Na OctoberCMS affected 4.2.24 Not specified
CNA Na OctoberCMS affected 4.2.25 Not specified
CNA Na OctoberCMS affected 4.3.0 Not specified
CNA Na OctoberCMS affected 4.3.1 Not specified
CNA Na OctoberCMS affected 4.3.2 Not specified
CNA Na OctoberCMS affected 4.3.3 Not specified
CNA Na OctoberCMS affected 4.3.4 Not specified
CNA Na OctoberCMS unaffected 4.3.5 Not specified
CNA Na OctoberCMS unaffected 4.4.0 Not specified

References

ReferenceSourceLinkTags
vuldb.com/submit/919993 [email protected] vuldb.com
vuldb.com/vuln/410869/cti [email protected] vuldb.com
vuldb.com/vuln/410869 [email protected] vuldb.com
vuldb.com/cve/CVE-2026-100909 [email protected] vuldb.com
github.com/0xGenesi/CVE/blob/main/October_CMS_Stream_Wrapper_Injection.md [email protected] github.com
github.com/octobercms/october/releases/tag/v4.3.5 [email protected] github.com
github.com/octobercms/october/commit/0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce3... [email protected] github.com
github.com/octobercms/october/security/advisories/GHSA-2xmm-m4wv-3fjh [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: chenhuanlin (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-27T00:00:00.000ZAdvisory disclosed
CNA2026-09-27T02:00:00.000ZVulDB entry created
CNA2026-09-27T12:24:21.000ZVulDB entry last update

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