CyberSecBulletin

YAFNET vulnerabilities

We track 3 vulnerabilities in YAFNET products. 3 are rated high or critical, and none are known to be exploited. The most recent was published on May 12, 2026.

3vulnerabilities
0critical
3high
0exploited
8.1average CVSS score

Latest YAFNET vulnerabilities

  • 7.3 High severity

    YAFNET: Improper Neutralization of Input During Web Page Generation

    CVE-2026-43939YAFNET

    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 HT

  • 8.1 High severity

    YAFNET: Improper Neutralization of Input During Web Page Generation

    CVE-2026-43938YAFNET

    YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5 and 3.2.12, the application's database logger (YAFNET.Core/Logger/DbLogger.cs) captures the incoming request's User-Agent header into a JObject, serializes it with JsonConvert, and stores the

  • 8.8 High severity

    YAFNET: Improper Neutralization of Special Elements used in an SQL Command

    CVE-2026-43937YAFNET

    YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5, Any admin OnPost… handler executes its side effects before the ResultFilterAttribute rewrites the response to a 302 to /Info/4. The most impactful abuse is /Admin/RunSql, whose OnPostRunQuery