CVE-2026-100909
A vulnerability was found in OctoberCMS up to 4.1.19/4.2.25/4.3.4
- Risk score
- 53/100
- CVSS
- 7.3 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 28 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 exploi…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.3 high
- Remotely exploitable without logging in
References
- https://github.com/0xGenesi/CVE/blob/main/October_CMS_Stream_Wrapper_Injection.md
- https://github.com/octobercms/october/commit/0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58
- https://github.com/octobercms/october/releases/tag/v4.3.5
- https://github.com/octobercms/october/security/advisories/GHSA-2xmm-m4wv-3fjh
- https://vuldb.com/cve/CVE-2026-100909
- https://vuldb.com/submit/919993
- https://vuldb.com/vuln/410869
- https://vuldb.com/vuln/410869/cti
Original 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.
Last activity 28 Sep 2026. Patch Forecast updates every hour.