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CVE-2026-67921

CriticalPublished

Cross-Site Request Forgery (CSRF) vulnerability exists in Halo CMS versions up to 2.25.4 via the CorsConfigurer.java and the CsrfConfigurer.java components....

Published: Aug 18, 2026
Updated: Aug 20, 2026
Assigning CNA: mitre
Evidence observed: Aug 26, 2026

Primary CVSS

9.3/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

EPSS probability estimate

0.2%

Low · next 30 days

Percentile: 10.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Cross-Site Request Forgery (CSRF) vulnerability exists in Halo CMS versions up to 2.25.4 via the CorsConfigurer.java and the CsrfConfigurer.java components. This allows a remote attacker to execute arbitrary code.

Sources

halo-cors-csrf-CVE-2026-67921PoC
Proof-of-concept demonstrating a combined CORS misconfiguration and CSRF protection bypass in Halo CMS, enabling cross-site request forgery attacks to create admin users, change passwords, install plugins, and modify content.
halo-cve-2026-67919Exploit
halo cms plugin 1-request rce from a url, PoC + exploit chain

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