Detections
Analytics

SCA: security update for YAFNET.Core (GHSA-33gv-fc78-qgf5)

high Tenable Cloud Security Plugin ID 441226

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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 result in the EventLog.Description column whenever an event
 (e.g., an unhandled exception) is logged. The admin event-log page
 (YetAnotherForum.NET/Pages/Admin/EventLog.cshtml.cs) later deserializes that JSON in FormatStackTrace()
 and interpolates the UserAgent value directly into an HTML string with no encoding, and the Razor view
 EventLog.cshtml emits the result through @Html.Raw. This vulnerability is fixed in 4.0.5 and 3.2.12.
 (CVE-2026-43938)

Solution

Update the YAFNET.Core library and its related packages to version 3.2.12 or later.

See Also

https://github.com/advisories/GHSA-33gv-fc78-qgf5

Plugin Details

Severity: High

ID: 441226

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 5/6/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.64

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-43938

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/5/2026

Vulnerability Publication Date: 5/5/2026

Reference Information

CVE: CVE-2026-43938