CVE-2026-101005CWE-918ssrf

CVE-2026-101005

High · published September 28, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
21.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
6.9 · 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
EPSS
0.00298 · 21.3th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-28T11:17Z
References (8)
https://github.com/0xGenesi/CVE/blob/main/October_CMS_SSRF_IPv6_Mapped_IPv4_Bypass.md · [email protected]https://github.com/octobercms/october/releases/tag/v4.3.5 · [email protected]https://github.com/octobercms/october/security/advisories/GHSA-j2j7-7m99-6226 · [email protected]https://vuldb.com/cve/CVE-2026-101005 · [email protected]https://vuldb.com/submit/922294 · [email protected]https://vuldb.com/vuln/410875 · [email protected]https://vuldb.com/vuln/410875/cti · [email protected]https://www.cybersecurity-help.cz/vdb/vulns/149488/ · [email protected]
EPSS history
Timeline
  • 29 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 28 SEP 06:00Z
    October CMS SSRF Protection ResizeImages.php validateExternalImageHost server-side request forgery
    cvelistv5