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CVE Vulnerability Details :
CVE-2026-43937
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-12 May, 2026 | 14:00
Updated At-12 May, 2026 | 15:42
Rejected At-
▼CVE Numbering Authority (CNA)
YAF.NET: Pre-Handler Authorization Bypass on Admin Pages Enabling Blind SQL Execution via `/Admin/RunSql`

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.

Affected Products
Vendor
YAFNET
Product
YAFNET
Versions
Affected
  • < 4.0.5
Problem Types
TypeCWE IDDescription
CWECWE-89CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWECWE-841CWE-841: Improper Enforcement of Behavioral Workflow
Type: CWE
CWE ID: CWE-89
Description: CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Type: CWE
CWE ID: CWE-841
Description: CWE-841: Improper Enforcement of Behavioral Workflow
Metrics
VersionBase scoreBase severityVector
3.18.8HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5
x_refsource_CONFIRM
Hyperlink: https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5
exploit
Hyperlink: https://github.com/YAFNET/YAFNET/security/advisories/GHSA-xhw7-j96h-c3g5
Resource:
exploit
Details not found