rxerium/CVE-2025-68461

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GitHub
Analysisdeepseek-v4-pro:cloud ·

Technical assessment

A Nuclei template that detects vulnerable Roundcube Webmail instances by extracting the version from the 'rcversion' JSON field and comparing it against known vulnerable ranges (<1.5.12 or 1.6.0-1.6.11). It does not exploit the XSS vulnerability.

Backdoor review

No backdoor observed in reviewed code

The supplied evidence consists of a Nuclei template (CVE-2025-68461.yaml) and a README.md file for a CVE-2025-68461 detection script. The template performs a standard version-based vulnerability check against Roundcube Webmail by extracting the 'rcversion' field and comparing it to known vulnerable ranges. No backdoor, deceptive payload, or concealed executable behavior is present in the reviewed text. The README provides usage instructions and contact information, which is normal for a public PoC repository.

ClassificationScanner
Model confidence100%
AuthenticationNot required
LanguagesYAML
Target softwareRoundcube Webmail
Attack typesCross-Site Scripting (XSS)
Evidence & reasoningClassification basis · observed behavior · safety review
Technical evidence

Classification basis and observed behavior

Classification basis

The artifact is a Nuclei template that performs version detection and comparison to identify vulnerable instances. It does not contain any code to inject or execute a payload, steal cookies, or otherwise exploit the XSS vulnerability. The README explicitly describes it as a 'detection method' and 'vulnerability detection script'.

CVE-2025-68461.yaml:1-75README.md:5-7README.md:50

Requirements

  • Target must be running Roundcube Webmail and expose the 'rcversion' field in its HTTP response body.CVE-2025-68461.yaml:34CVE-2025-68461.yaml:70-71

Observed behavior

  • Sends an HTTP GET request to the target base URL.CVE-2025-68461.yaml:25-27
  • Extracts the major, minor, and patch version numbers from the 'rcversion' JSON field using regex.CVE-2025-68461.yaml:30-49
  • Constructs a version string in the format 'major.minor.patch'.CVE-2025-68461.yaml:51-54
  • Checks if the extracted version is less than 1.5.12 or between 1.6.0 and 1.6.11 (inclusive).CVE-2025-68461.yaml:63-66
  • Matches the response body for the word 'Roundcube' and checks for HTTP status 200.CVE-2025-68461.yaml:68-75
  • Reports the detected Roundcube version.CVE-2025-68461.yaml:57-59
Safety-review evidence

Behaviors behind the backdoor verdict

Observables

Contact Information
Signal link and Twitter/X/LinkedIn profiles in README.mdThe README includes author contact details, which is typical for open-source projects and does not constitute a backdoor or deceptive payload.README.md:50-52
Review boundaries

What the analysis did not establish

  • One file (total 3 files in artifact, 2 provided as text) was omitted from the evidence packet; its content is unknown.
  • The evidence packet reports complete_artifact_coverage as false, so the full artifact content is not available for analysis.
  • One file (metadata only, not analyzed) was omitted from the text evidence; its content is unknown.
  • Binary content, if any, was not inspected per the evidence envelope policy.
  • The review is limited to the supplied text; no execution or dynamic analysis was performed.
Model interpretation

This review is limited to the supplied PoC code and context. It does not assert that the code works or is safe to execute.

Linked vulnerabilities

1