diff --git a/pkgs/by-name/ye/yelp-xsl/cve-2025-3155.patch b/pkgs/by-name/ye/yelp-xsl/cve-2025-3155.patch
new file mode 100644
index 000000000000..36886d7c4a2a
--- /dev/null
+++ b/pkgs/by-name/ye/yelp-xsl/cve-2025-3155.patch
@@ -0,0 +1,79 @@
+diff --git a/xslt/common/html.xsl b/xslt/common/html.xsl
+index 77aed075..82832fb4 100644
+--- a/xslt/common/html.xsl
++++ b/xslt/common/html.xsl
+@@ -266,6 +266,16 @@ certain tokens, and you can add your own with {html.sidebar.mode}. See
+ -->
+ <xsl:param name="html.sidebar.right" select="''"/>
+ 
++<!--@@==========================================================================
++html.csp.nonce
++An optional CSP nonce string to allow the execution of scripts and styles.
++@revision[version=42.2 date=2025-02-22 status=final]
++
++This parameter takes a string value that will be added to the 'nonce' attribute
++of all 'style' and 'script' tags in the generated HTML output. This paramter is used
++to whitelist script and style tags that are allowed to be executed.
++-->
++<xsl:param name="html.csp.nonce" select="false()"/>
+ 
+ <!--**==========================================================================
+ html.output
+@@ -1124,6 +1134,11 @@ dimensions. All parameters can be automatically computed if not provided.
+     </xsl:call-template>
+   </xsl:param>
+   <style type="text/css">
++    <xsl:if test="$html.csp.nonce">
++      <xsl:attribute name="nonce">
++        <xsl:value-of select="$html.csp.nonce" />
++      </xsl:attribute>
++    </xsl:if>
+     <xsl:call-template name="html.css.content">
+       <xsl:with-param name="node" select="$node"/>
+       <xsl:with-param name="direction" select="$direction"/>
+@@ -1533,6 +1548,11 @@ copy, override this template and provide the necessary files.
+   <xsl:param name="node" select="."/>
+   <xsl:if test="$node//mml:*[1]">
+     <script type="text/javascript">
++      <xsl:if test="$html.csp.nonce">
++        <xsl:attribute name="nonce">
++          <xsl:value-of select="$html.csp.nonce" />
++        </xsl:attribute>
++      </xsl:if>
+       <xsl:attribute name="src">
+         <xsl:text>http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=MML_HTMLorMML</xsl:text>
+       </xsl:attribute>
+@@ -1558,6 +1578,11 @@ result of {html.js.content} to that file.
+ <xsl:template name="html.js.script">
+   <xsl:param name="node" select="."/>
+   <script type="text/javascript">
++    <xsl:if test="$html.csp.nonce">
++      <xsl:attribute name="nonce">
++        <xsl:value-of select="$html.csp.nonce" />
++      </xsl:attribute>
++    </xsl:if>
+     <xsl:call-template name="html.js.content">
+       <xsl:with-param name="node" select="$node"/>
+     </xsl:call-template>
+@@ -2035,8 +2060,19 @@ on all `code` elements with `"syntax"` in the class value.
+ <xsl:template name="html.js.syntax">
+   <xsl:param name="node" select="."/>
+   <xsl:if test="$html.syntax.highlight">
+-  <script type="text/javascript" src="{$html.js.root}highlight.pack.js"></script>
+-  <script><![CDATA[
++    <script type="text/javascript" src="{$html.js.root}highlight.pack.js">
++      <xsl:if test="$html.csp.nonce">
++        <xsl:attribute name="nonce">
++          <xsl:value-of select="$html.csp.nonce" />
++        </xsl:attribute>
++      </xsl:if>
++    </script>
++    <script>
++    <xsl:if test="$html.csp.nonce">
++      <xsl:attribute name="nonce">
++        <xsl:value-of select="$html.csp.nonce" />
++      </xsl:attribute>
++    </xsl:if><![CDATA[
+ document.addEventListener('DOMContentLoaded', function() {
+   var matches = document.querySelectorAll('code.syntax')
+   for (var i = 0; i < matches.length; i++) {
diff --git a/pkgs/by-name/ye/yelp-xsl/package.nix b/pkgs/by-name/ye/yelp-xsl/package.nix
index 613e12f0a561..9f776b03e013 100644
--- a/pkgs/by-name/ye/yelp-xsl/package.nix
+++ b/pkgs/by-name/ye/yelp-xsl/package.nix
@@ -29,6 +29,10 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
+  patches = [
+    ./cve-2025-3155.patch
+  ];
+
   passthru = {
     updateScript = gnome.updateScript {
       packageName = "yelp-xsl";