CamaleonCMS 2.9.1 Server-Side Template Injection via test_email Action (CVE-2026-73330) | HOL Guard CVE

Medium · CVSS 6.6CVE-2026-73330

CamaleonCMS 2.9.1 Server-Side Template Injection via test_email Action

Answer in brief

CVE-2026-73330 records a Medium severity (CVSS 6.6) vulnerability in CamaleonCMS 2.9.1 Server-Side Template Injection via test_email Action. The current sources do not mark it as known exploited. The current feed maps owen2345/CamaleonCMS (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 Aug 12, 2026Updated Aug 26, 2026Source checked Sep 27, 2026First seen by HOL Aug 12, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.6
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.6. 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 owen2345/CamaleonCMS (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
owen2345/CamaleonCMSgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for owen2345/CamaleonCMS.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

Upstream source description

CamaleonCMS 2.9.1 contains a server-side template injection vulnerability that allows authenticated administrators to execute arbitrary commands by embedding ERB tags in the email parameter of the test_email settings action, which are evaluated when an SMTP rejection reflects the recipient address back in the exception message rendered as an inline ERB template. Attackers can submit a crafted email parameter containing ERB expressions through the admin settings test_email endpoint, causing the Rails inline template renderer to evaluate attacker-controlled Ruby code and achieve arbitrary command execution as the Rails process user.

Quoted source text, attributed separately from HOL analysis.