CVE-2026-27070
Stored XSS in Everest Forms Pro Allows Persistent Script Injection
Publication date: 2026-03-19
Last updated on: 2026-04-28
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wpeverest | everest_forms_pro | From 1.0.0 (inc) to 1.9.10 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-27070 is a medium severity Cross Site Scripting (XSS) vulnerability in the WordPress Everest Forms Pro Plugin versions up to and including 1.9.10.
This vulnerability allows attackers to inject malicious scripts—such as redirects, advertisements, or other HTML payloads—into websites using the plugin.
These malicious scripts execute when visitors access the compromised site, potentially causing harm.
Exploitation requires user interaction by a privileged user, such as clicking a malicious link, visiting a crafted page, or submitting a form.
Although an unauthenticated user can initiate the attack, successful exploitation depends on this privileged user action.
How can this vulnerability impact me? :
This vulnerability can lead to the execution of malicious scripts on your website, which may result in unauthorized redirects, display of unwanted advertisements, or other harmful HTML payloads.
Such exploitation can compromise the integrity and trustworthiness of your website, potentially harming your users and damaging your reputation.
Because the vulnerability requires interaction by a privileged user, it can also lead to further compromise of administrative functions or sensitive data.
The CVSS score of 7.1 indicates a moderate risk, meaning the impact can be significant if exploited.
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 is a Stored Cross Site Scripting (XSS) issue in the Everest Forms Pro WordPress plugin up to version 1.9.10. Detection typically involves monitoring for suspicious script injections or unusual HTML payloads in web forms or stored content generated by the plugin.'}, {'type': 'paragraph', 'content': "Since no official patch is available and the vulnerability requires user interaction, detection can include reviewing web server logs for unusual requests or payloads targeting the plugin's form inputs."}, {'type': 'paragraph', 'content': 'Specific commands are not provided in the available resources, but common approaches include using web vulnerability scanners that detect XSS vulnerabilities or manual inspection of form inputs and stored data for injected scripts.'}] [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include applying the mitigation rule issued by Patchstack to block attacks targeting this vulnerability until an official patch is released.
Users are advised to update the Everest Forms Pro plugin immediately once a patch becomes available.
In the meantime, seek assistance from your hosting provider or web developer to apply available mitigations and monitor for suspicious activity.