CVSS 3.1
7.3 highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:NCVE-2026-43939
High (7.3). EPSS 0.2% chance of exploitation in the next 30 days.
YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5 and 3.2.12, the thread posting and reply feature accepts user-supplied content via a a post or reply that is stored server-side and later rendered back into the thread page without adequate HTML sanitization or contextual output encoding. This vulnerability is fixed in 4.0.5 and 3.2.12.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-11-01)
- CWEs
- CWE-79, CWE-80, CWE-116
- Published
- Modified
- Record from
- the NVD, synced