CVE-2018-17866

Name: CVE-2018-17866
Creator: NVD / NIST
Published: 2018-10-09T22:29:00.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.65%

Last modified Jun 17, 2026

CVE-2018-17866 is a vulnerability of currently unknown severity. Multiple cross-site scripting (XSS) vulnerabilities in includes/core/um-actions-login.php in the "Ultimate Member - User Profile & Membership" plugin before 2.0.28 for WordPress allow remote attackers to inject arbitrary web script or HTML via the "Primary button Text" or "Second button text" field.. EPSS estimates a 1.65% chance of exploitation in the next 30 days.

Description

Multiple cross-site scripting (XSS) vulnerabilities in includes/core/um-actions-login.php in the "Ultimate Member - User Profile & Membership" plugin before 2.0.28 for WordPress allow remote attackers to inject arbitrary web script or HTML via the "Primary button Text" or "Second button text" field.

Metrics

EPSS Probability

1.65%

73.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Ultimatemember	Ultimate Member	< 2.0.28

References

https://serhack.me/articles/ultimate-member-xss-security-issueExploit, Third Party Advisory
https://wordpress.org/plugins/ultimate-member/#developersProduct, Release Notes, Third Party Advisory
https://wpvulndb.com/vulnerabilities/9615
https://serhack.me/articles/ultimate-member-xss-security-issueExploit, Third Party Advisory
https://wordpress.org/plugins/ultimate-member/#developersProduct, Release Notes, Third Party Advisory
https://wpvulndb.com/vulnerabilities/9615

Timeline

Published: Oct 9, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-17866?

How severe is CVE-2018-17866?

Severity scoring for CVE-2018-17866 is pending analysis. The EPSS model estimates a 1.65% probability of exploitation in the next 30 days.

How do I fix CVE-2018-17866?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-17866?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST