Vulnerability · Published Oct 26, 2021 · Assigned by mitre

CVE-2021-41866

Medium 5.4

In plain English

A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS NVD)5.4Medium

Exploit odds (30 days)0.5%top 57.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

MyBB before 1.8.28 allows stored XSS because the displayed Template Name value in the Admin CP's theme management is not escaped properly.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/mybb/mybb/security/advisories/ x_refsource_MISC
https://github.com/mybb/mybb/security/advisories/GHSA-gxhv-r3m5-6qv7 x_refsource_CONFIRM