CVE-2021-24859

Name: CVE-2021-24859
Creator: NVD / NIST
Published: 2021-12-13T11:15:09.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2021-24859 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. The User Meta Shortcodes WordPress plugin through 0.5 registers a shortcode that allows any user with a role as low as contributor to access other users metadata by specifying the user login as a parameter. This makes the WP instance vulnerable to data extrafiltration, including password hashes. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

The User Meta Shortcodes WordPress plugin through 0.5 registers a shortcode that allows any user with a role as low as contributor to access other users metadata by specifying the user login as a parameter. This makes the WP instance vulnerable to data extrafiltration, including password hashes

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.78%

51.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
User Meta Shortcodes Project	User Meta Shortcodes	<= 0.5

References

https://wpscan.com/vulnerability/958f44a5-07e7-4349-9212-2a039a082ba0Exploit, Third Party Advisory
https://wpscan.com/vulnerability/958f44a5-07e7-4349-9212-2a039a082ba0Exploit, Third Party Advisory

Timeline

Published: Dec 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24859?

How severe is CVE-2021-24859?

CVE-2021-24859 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24859?

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-2021-24859?

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

Scan your code now

Source: NVD / NIST