CVE-2021-27889

Description

Cross-site Scripting (XSS) vulnerability in MyBB before 1.8.26 via Nested Auto URL when parsing messages.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://github.com/mybb/mybb/security/advisories/GHSA-xhj7-3349-mqcm ↗
• http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html ↗
• https://blog.sonarsource.com/mybb-remote-code-execution-chain ↗