CVEvulnerability

CVE-2026-43939

7.3 HIGH Published 2026-05-12 Modified 2026-06-17 Official page ↗
Status
Deferred
Published
2026-05-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.3 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Weaknesses
CWE-116, CWE-79, CWE-80

Description

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.

Related

Weakness · CWE (3)

  • CWE-116 Improper Encoding or Escaping of Output weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness
  • CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page weakness

References