diff --git a/news/changelog-1.10.md b/news/changelog-1.10.md
index c2fcee0b8b8..9a0536b6955 100644
--- a/news/changelog-1.10.md
+++ b/news/changelog-1.10.md
@@ -2,6 +2,8 @@
 
 ## In this release
 
+- ([#15143](https://github.com/quarto-dev/quarto-cli/issues/15143)): Fix PDF rendering with `pdf-standard` failing with `\DocumentMetadata not supported!` after updating to KOMA-Script 3.49.3, which provides the default document classes.
+
 ## In previous releases
 
 - ([#14920](https://github.com/quarto-dev/quarto-cli/issues/14920)): Correct the Windows ARM diagnostic for x64 R crashes with stable native ARM64 R installation guidance, including reinstalling packages and configuring `QUARTO_R`.
diff --git a/src/resources/formats/pdf/pandoc/template.tex b/src/resources/formats/pdf/pandoc/template.tex
index 5ce3e586c35..00ba246571a 100644
--- a/src/resources/formats/pdf/pandoc/template.tex
+++ b/src/resources/formats/pdf/pandoc/template.tex
@@ -1,4 +1,12 @@
 $document-metadata.latex()$
+$if(pdfstandard)$
+$-- KOMA-Script 3.49.3 aborts on \DocumentMetadata unless \komascript_documentmetadata_test: exists;
+$-- a no-op keeps the 3.49.2 behaviour (#15143). The guard keeps a definition made earlier.
+\ExplSyntaxOn
+\cs_if_exist:NF \komascript_documentmetadata_test:
+  { \cs_new:Npn \komascript_documentmetadata_test: { } }
+\ExplSyntaxOff
+$endif$
 % Options for packages loaded elsewhere
 $passoptions.latex()$
 %