Cross-site request forgery in the Guardian/CMC login before 26.3.0 (CVE-2026-33920) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-33920

Cross-site request forgery in the Guardian/CMC login before 26.3.0

Answer in brief

CVE-2026-33920 records a Unknown severity vulnerability in Cross-site request forgery in the Guardian/CMC login before 26.3.0. The current sources do not mark it as known exploited. The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 8, 2026Source checked Sep 8, 2026First seen by HOL Sep 8, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Nozomi Networks/CMC (generic), Nozomi Networks/Guardian (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Nozomi Networks/CMCgeneric	>=0 <26.3.0	26.3.0
Nozomi Networks/Guardiangeneric	>=0 <26.3.0	26.3.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for Nozomi Networks/CMC, Nozomi Networks/Guardian.
Review the reported fix. Update Nozomi Networks/CMC to 26.3.0; Nozomi Networks/Guardian to 26.3.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Source referencesecurity.nozominetworks.com

Upstream source description

A cross-site request forgery vulnerability was discovered in the login functionality (both standard and SAML) due to missing validation of the anti-CSRF token. An attacker with a valid account can trick a victim into unknowingly authenticating with the attacker's credentials. Any operation performed by the victim in this state is attributed to the attacker's account, compromising the integrity of the audit trail.

Quoted source text, attributed separately from HOL analysis.