Directory.Packages.props

@@ -146,20 +146,18 @@
   </ItemGroup>
 
   <!--
-    GHSA-pgww-w46g-26qg (NU1902, moderate) is on AngleSharp 1.1.1, pulled in TRANSITIVELY by
-    bunit into ZB.MOM.WW.ScadaBridge.CentralUI.Tests. With TreatWarningsAsErrors this made the
-    WHOLE SOLUTION BUILD RED — `dotnet build ZB.MOM.WW.ScadaBridge.slnx` failed on clean main,
-    so no test suite could run and every "0 warnings / suite green" gate was unverifiable.
+    GHSA-pgww-w46g-26qg (NU1902, moderate) on AngleSharp, reached only transitively via bunit
+    in ZB.MOM.WW.ScadaBridge.CentralUI.Tests. With TreatWarningsAsErrors it made the WHOLE
+    SOLUTION BUILD RED, so no suite could run and every "0 warnings / green" gate was
+    unverifiable.
 
-    Fixed the same way HistorianGateway fixed the identical break (historiangw @ 6bc005d):
-    an explicit test-only pin to a patched AngleSharp. TEST-ONLY — AngleSharp is a bunit
-    (HTML-parsing) dependency and reaches no production project, so this cannot affect runtime.
-
-    Do not "fix" this by bumping bunit: 2.0.33-preview is the current preview line and still
-    resolves the vulnerable AngleSharp transitively. Pinning the leaf is the fix.
+    Resolved with a scoped NuGetAuditSuppress in that ONE test project (see its csproj for the
+    full rationale) — deliberately NOT a version pin here. A pin was tried first and reverted:
+    AngleSharp >= 1.5.0 is the only patched line, and it changes IHtmlCollection<T>'s indexer,
+    which makes every bunit build throw MissingMethodException at runtime (33 render tests
+    failed). Bumping bunit does not help either — even 2.7.2 resolves AngleSharp 1.4.0, which
+    is still vulnerable. There is no working patched combination upstream today.
   -->
-  <ItemGroup>
-    <PackageVersion Include="AngleSharp" Version="1.5.2" />
-  </ItemGroup>
+
 
 </Project>

tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests.csproj

@@ -10,9 +10,6 @@
 
   <ItemGroup>
     <PackageReference Include="bunit" />
-    <!-- Security pin: GHSA-pgww-w46g-26qg. bunit pulls the vulnerable AngleSharp
-         1.1.1 transitively; 1.5.2 patches it. Test-only, no production reach. -->
-    <PackageReference Include="AngleSharp" />
     <PackageReference Include="coverlet.collector" />
     <PackageReference Include="Microsoft.AspNetCore.TestHost" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" />
@@ -43,4 +40,28 @@
     <ProjectReference Include="../../src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.csproj" />
   </ItemGroup>
 
+  <!--
+    GHSA-pgww-w46g-26qg (NU1902, moderate) on AngleSharp, reached ONLY transitively via
+    bunit. Suppressed here, scoped to this one test project, because there is verifiably
+    no version combination that resolves it:
+
+      - AngleSharp < 1.5.0 is vulnerable (1.4.0 is what even the newest bunit resolves).
+      - AngleSharp >= 1.5.0 changed IHtmlCollection<T>'s indexer, so every bunit build
+        throws MissingMethodException at runtime - 33 CentralUI render tests fail.
+      - Bumping bunit does not help: checked up to 2.7.2, still AngleSharp 1.4.0.
+
+    So the choice is a suppressed advisory or an unbuildable/failing test suite. Scoped
+    suppression wins because the reach is genuinely nil: AngleSharp is an HTML parser used
+    by bunit to assert on rendered markup in unit tests. It ships in no production project
+    and processes no untrusted input - the "documents" it parses are our own components'
+    output. Revisit when bunit ships against AngleSharp 1.5+.
+
+    NOT the same call as GHSA-2m69-gcr7-jv3q (SQLitePCLRaw): that suppression was removed
+    in 2026-07 precisely because it was masking a vulnerability in PRODUCTION code paths.
+    This one is test-only, and a patched-but-working version does not exist upstream.
+  -->
+  <ItemGroup>
+    <NuGetAuditSuppress Include="https://github.com/advisories/GHSA-pgww-w46g-26qg" />
+  </ItemGroup>
+
 </Project>