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Halo CMS CVE-2026-67921

| EUVDEUVD-2026-61145 CRITICAL
Cross-Site Request Forgery (CSRF) (CWE-352)
2026-08-18 mitre GHSA-5x82-gw26-c8r3
9.3
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
9.3 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
vuln.today AI
7.1 HIGH

CSRF needs a victim's authenticated session and interaction (UI:R, no attacker privileges); primary impact is unauthorized state change (I:H), with limited confidentiality and unconfirmed scope change, so S:U and C:L pending RCE verification.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

4
Analysis Generated
Aug 20, 2026 - 17:47 vuln.today
CVSS changed
Aug 20, 2026 - 17:22 NVD
9.3 (CRITICAL)
CVE Published
Aug 18, 2026 - 00:00 cve.org
CRITICAL 9.3
CVE Published
Aug 18, 2026 - 00:00 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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.

AnalysisAI

Cross-site request forgery in Halo CMS through version 2.25.4 lets a remote attacker abuse weaknesses in the CorsConfigurer.java and CsrfConfigurer.java security-configuration components to force an authenticated victim's browser into performing unintended state-changing actions. The advisory further claims this can lead to arbitrary code execution, though the CWE-352/CSRF classification and the CVSS user-interaction requirement suggest the RCE outcome is likely a chained or victim-privilege-dependent consequence rather than a direct memory-corruption RCE. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
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Persist
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated Halo CMS user (ideally an administrator) to be logged in and to interact with attacker-controlled content (UI:R in the CVSS vector) - for example, visiting a malicious webpage while holding a valid Halo session. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Signals conflict and should be weighed carefully. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch version is identified in the available data; upgrade to the latest Halo release beyond 2.25.4 once the vendor confirms a fixed version, tracking the halo-dev/halo repository and its security advisories. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all Halo CMS deployments and document current versions in use. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-67921 vulnerability details – vuln.today

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