CVE-2023-27890

Name: CVE-2023-27890
Creator: NVD / NIST
Published: 2023-04-14T01:15:07.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2023-27890 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The Export User plugin through 2.0 for MyBB allows XSS during the process of an admin generating DSGVO data for a user, via the Custom User Title, Location, or Bio field. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

The Export User plugin through 2.0 for MyBB allows XSS during the process of an admin generating DSGVO data for a user, via the Custom User Title, Location, or Bio field. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.64%

45.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Export User Project	Export User	<= 2.0

References

http://packetstormsecurity.com/files/171421/MyBB-Export-User-2.0-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
https://community.mybb.com/mods.php?action=view&pid=1408Broken Link
https://community.mybb.com/user-121250.htmlPermissions Required
http://packetstormsecurity.com/files/171421/MyBB-Export-User-2.0-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
https://community.mybb.com/mods.php?action=view&pid=1408Broken Link
https://community.mybb.com/user-121250.htmlPermissions Required

Timeline

Published: Apr 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-27890?

How severe is CVE-2023-27890?

CVE-2023-27890 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27890?

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-2023-27890?

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

Scan your code now

Source: NVD / NIST