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CVE-2026-28151 – Unauthenticated Local File Inclusion – Tonda WordPress Theme < 2.6

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Summary

CVE-2026-28151 is an unauthenticated Local File Inclusion (LFI) vulnerability in the Tonda WordPress theme, developed by Select-Themes, affecting all versions prior to 2.6. The flaw stems from improper control of a filename used in a PHP include/require statement, allowing an attacker to include arbitrary local files without authentication. It carries a CVSS v3.1 base score of 8.1 (High).

Technical details

  • Root cause: improper control of filename for include/require statements in PHP (CWE-98), allowing attacker-influenced input to be used when the theme resolves a file to include.
  • Trigger conditions: no authentication or user interaction is required; the attacker submits a request that causes the vulnerable theme code to include a file path of the attacker’s choosing.
  • Attack vector: network — the vulnerability is remotely exploitable over HTTP(S) against any internet-facing WordPress site running the affected theme.
  • Impact: successful exploitation can expose sensitive local files and, depending on server configuration, lead to disclosure of confidential data, integrity compromise, and availability impact (rated High for all three under CVSS).

Affected software

  • Tonda WordPress Theme (Select-Themes) — all versions prior to 2.6

Severity

  • CVSS v3.1 Base Score: 8.1 (High)
  • Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Update the Tonda WordPress theme to version 2.6 or later, which resolves the local file inclusion issue.
  • If immediate patching is not possible: restrict public access to the WordPress admin and theme-related endpoints, deploy a web application firewall rule to block path traversal/LFI patterns in requests, and monitor server logs for anomalous file-include attempts until the update can be applied.

References

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