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CVE-2026-13339 – Unauthenticated Arbitrary File Read (Path Traversal) – CubeWP Framework WordPress P

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Summary

CVE-2026-13339 is a path traversal (directory traversal, CWE-22) vulnerability in the CubeWP Framework plugin for WordPress affecting all versions up to and including 1.1.30. It allows unauthenticated attackers to read arbitrary files on the server, and is rated HIGH severity with a CVSS v3.1 base score of 7.5.

Technical details

  • Root cause: The cubewp_get_svg_content function does not properly restrict pathname input supplied through the prev_icon and next_icon parameters, allowing directory traversal outside the intended path.
  • Trigger conditions: The AJAX action requires a nonce, but the nonce is publicly emitted into the markup of any page rendering the CubeWP posts shortcode or widget with AJAX loading enabled, so any unauthenticated visitor can harvest it before sending the request.
  • Attack vector: Network; remotely exploitable without authentication, privileges, or user interaction.
  • Impact: Disclosure of the contents of arbitrary files on the server, which may contain sensitive information such as credentials. No integrity or availability impact.

Affected software

  • CubeWP Framework (WordPress plugin) — all versions up to and including 1.1.30.

Severity

  • CVSS v3.1 base score: 7.5 (HIGH)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Update the CubeWP Framework plugin to version 1.1.31 or later, which contains the fix.
  • If no patch can be applied: Restrict access to admin-ajax.php for the affected action at the web server or WAF layer, disable AJAX loading on CubeWP posts shortcodes/widgets, and review server logs for suspicious AJAX requests targeting cubewp_get_svg_content or requests containing traversal sequences in the prev_icon/next_icon parameters.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Raw HTTP response body: /wp-content/plugins/cubewp-framework/

References

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Map your entire attack surface (continously)

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Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

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IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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