CVE-2026-43937HIGH 8.8EPSS p38.1%

CVE-2026-43937CVE-2026-43937

Description

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 binds Editor from the POST body and passes it straight to IDbAccess.RunSql with no caller check, yielding arbitrary SQL execution for any low-privileged user. This vulnerability is fixed in 4.0.5.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.49% probability of exploitation · percentile 38.1% · 2026-06-18T12:00:27Z
Published2026-05-12
Last modified2026-05-13

Underlying weaknesses· 2

CWE-89CWE-841

References

  1. https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5
  2. https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5

2

TypeTargetConfidenceTier
WeaknessImproper Enforcement of Behavioral Workflowcwe-8410%live
WeaknessImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection')cwe-890%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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CVE-2026-43938
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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.