CVE-2026-22421
Local File Inclusion Vulnerability in AncoraThemes Quantum
Publication date: 2026-03-05
Last updated on: 2026-03-09
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ancorathemes | quantum | From 1.0 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-98 | The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or similar functions. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-22421 is a Local File Inclusion (LFI) vulnerability found in the WordPress Quantum Theme versions 1.0 and below. It allows unauthenticated attackers to include and display local files from the target website.
This happens due to improper control of filenames used in include or require statements in the PHP program of the theme, which can be exploited to access sensitive files.
How can this vulnerability impact me? :
[{'type': 'paragraph', 'content': 'The vulnerability can lead to exposure of sensitive information such as database credentials by allowing attackers to include local files from the website.'}, {'type': 'paragraph', 'content': "Depending on the website's configuration, this could enable a complete database takeover, posing a significant security risk."}, {'type': 'paragraph', 'content': 'Since the vulnerability is unauthenticated, attackers do not need any prior access to exploit it.'}] [1]
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'type': 'paragraph', 'content': 'This vulnerability allows unauthenticated attackers to include local files from the target website and display their contents. Detection can involve monitoring web server logs for suspicious requests attempting to include local files via the Quantum theme.'}, {'type': 'paragraph', 'content': 'Specific commands are not provided in the available resources, but typical detection methods include searching web server access logs for patterns indicating Local File Inclusion attempts, such as requests containing file path traversal sequences (e.g., "../") or attempts to include sensitive files.'}] [1]
What immediate steps should I take to mitigate this vulnerability?
Since no official patch is currently available for the Quantum theme, immediate mitigation involves applying the Patchstack mitigation rule designed to block exploitation attempts.
- Apply the Patchstack mitigation rule (Patchstack ID PSID 1246c5f80925) to block exploitation attempts.
- Monitor your website for suspicious activity related to Local File Inclusion.
- Consider restricting file inclusion permissions and hardening your web server configuration to limit access to sensitive files.