CVE-2026-101005
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
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 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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | October CMS | 4.3.0 | affected |
| n/a | October CMS | 4.3.1 | affected |
| n/a | October CMS | 4.3.2 | affected |
| n/a | October CMS | 4.3.3 | affected |
| n/a | October CMS | 4.3.4 | affected |
| n/a | October CMS | 4.3.5 | unaffected |
Weaknesses
- CWE-918: Server-Side Request Forgery
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
References
- https://vuldb.com/vuln/410875
- https://vuldb.com/vuln/410875/cti
- https://vuldb.com/cve/CVE-2026-101005
- https://vuldb.com/submit/922294
- https://github.com/octobercms/october/security/advisories/GHSA-j2j7-7m99-6226
- 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://www.cybersecurity-help.cz/vdb/vulns/149488/
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