{"id":"CVE-2026-101005","title":"A vulnerability was detected in October CMS up to 4.3.4","summary":"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 fo…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-918"],"product":"October CMS","affected":["october_cms 4.3.0","october_cms 4.3.1","october_cms 4.3.2","october_cms 4.3.3","october_cms 4.3.4"],"published":"2026-09-28","updated":"2026-09-28","sourceUpdated":"2026-09-28T07:17:19.827","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101005","references":[{"url":"https://github.com/0xGenesi/CVE/blob/main/October_CMS_SSRF_IPv6_Mapped_IPv4_Bypass.md","label":"cna@vuldb.com"},{"url":"https://github.com/octobercms/october/releases/tag/v4.3.5","label":"cna@vuldb.com"},{"url":"https://github.com/octobercms/october/security/advisories/GHSA-j2j7-7m99-6226","label":"cna@vuldb.com"},{"url":"https://vuldb.com/cve/CVE-2026-101005","label":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/922294","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410875","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410875/cti","label":"cna@vuldb.com"},{"url":"https://www.cybersecurity-help.cz/vdb/vulns/149488/","label":"cna@vuldb.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-28T07:04:53.496Z","slug":"CVE-2026-101005","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}