MEDIUM 5.5 NVD
CVE-2026-101005
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
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.
References
- https://github.com/0xGenesi/CVE/blob/main/October_CMS_SSRF_IPv6_Mapped_IPv4_Bypass.md
- https://github.com/octobercms/october/releases/tag/v4.3.5
- https://github.com/octobercms/october/security/advisories/GHSA-j2j7-7m99-6226
- https://vuldb.com/cve/CVE-2026-101005
- https://vuldb.com/submit/922294
This medium severity vulnerability with a CVSS score of 5.5 was published on 2026-09-28 via NVD.
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