Vulnerability Description
MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode).
CVSS Score
5.4
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mybb | Mybb | < 1.8.25 |
Related Weaknesses (CWE)
References
- https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677aPatchThird Party Advisory
- https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75wExploitThird Party Advisory
- https://mybb.com/versions/1.8.25/Release NotesVendor Advisory
- https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677aPatchThird Party Advisory
- https://github.com/mybb/mybb/security/advisories/GHSA-6483-hcpp-p75wExploitThird Party Advisory
- https://mybb.com/versions/1.8.25/Release NotesVendor Advisory
FAQ
What is CVE-2021-27279?
CVE-2021-27279 is a vulnerability with a CVSS score of 5.4 (MEDIUM). MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode).
How severe is CVE-2021-27279?
CVE-2021-27279 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-27279?
Check the references section above for vendor advisories and patch information. Affected products include: Mybb Mybb.