Adjust query severities

javascript/ql/src/Security/CWE-079/ReflectedXss.ql

@@ -4,7 +4,7 @@
  *              a cross-site scripting vulnerability.
  * @kind path-problem
  * @problem.severity error
- * @security-severity 6.1
+ * @security-severity 7.8
  * @precision high
  * @id js/reflected-xss
  * @tags security

javascript/ql/src/Security/CWE-079/StoredXss.ql

@@ -4,7 +4,7 @@
  *              a stored cross-site scripting vulnerability.
  * @kind path-problem
  * @problem.severity error
- * @security-severity 6.1
+ * @security-severity 7.8
  * @precision high
  * @id js/stored-xss
  * @tags security

javascript/ql/src/Security/CWE-079/Xss.ql

@@ -4,7 +4,7 @@
  *              a cross-site scripting vulnerability.
  * @kind path-problem
  * @problem.severity error
- * @security-severity 6.1
+ * @security-severity 7.8
  * @precision high
  * @id js/xss
  * @tags security

javascript/ql/src/Security/CWE-079/XssThroughDom.ql

@@ -4,7 +4,7 @@
  *              can lead to a cross-site scripting vulnerability.
  * @kind path-problem
  * @problem.severity warning
- * @security-severity 6.1
+ * @security-severity 7.8
  * @precision high
  * @id js/xss-through-dom
  * @tags security

javascript/ql/src/Security/CWE-117/LogInjection.ql

@@ -4,7 +4,7 @@
  *              insertion of forged log entries by a malicious user.
  * @kind path-problem
  * @problem.severity error
- * @security-severity 7.8
+ * @security-severity 6.1
  * @precision medium
  * @id js/log-injection
  * @tags security

javascript/ql/src/change-notes/2023-10-09-adjust-xss-and-log-injection-severity.md

@@ -0,0 +1,6 @@
+---
+category: queryMetadata
+---
+
+* Lower the severity of log-injection to medium.
+* Increase the severity of XSS to high.