profullstack · CSTRSK · Aug 9, 2026
diff --git a/docs/VULNERABILITY_CATALOG.md b/docs/VULNERABILITY_CATALOG.md
@@ -7,12 +7,12 @@ from each file's header comment, so this page cannot drift from the source.
 
 ## Totals
 
-- **Test cases:** 62
-- **Expected detections:** 62
-- **`VULNERABLE:` markers:** 123 (individual lines a scanner should flag)
-- **`SAFE:` markers:** 73 (lines a scanner must not flag — the false-positive control group)
+- **Test cases:** 63
+- **Expected detections:** 63
+- **`VULNERABLE:` markers:** 125 (individual lines a scanner should flag)
+- **`SAFE:` markers:** 75 (lines a scanner must not flag — the false-positive control group)
 - **Languages:** 8 — dotenv, go, java, javascript, json, python, ruby, text
-- **CWE categories:** 46 — CWE-20, CWE-22, CWE-78, CWE-79, CWE-89, CWE-90, CWE-95, CWE-113, CWE-117, CWE-190, CWE-201, CWE-209, CWE-256, CWE-295, CWE-321, CWE-327, CWE-330, CWE-338, CWE-346, CWE-347, CWE-352, CWE-362, CWE-377, CWE-384, CWE-489, CWE-502, CWE-506, CWE-532, CWE-601, CWE-611, CWE-614, CWE-639, CWE-643, CWE-681, CWE-759, CWE-798, CWE-862, CWE-915, CWE-918, CWE-942, CWE-943, CWE-1236, CWE-1321, CWE-1333, CWE-1336, CWE-1357
+- **CWE categories:** 47 — CWE-20, CWE-22, CWE-78, CWE-79, CWE-89, CWE-90, CWE-95, CWE-113, CWE-117, CWE-190, CWE-201, CWE-209, CWE-215, CWE-256, CWE-295, CWE-321, CWE-327, CWE-330, CWE-338, CWE-346, CWE-347, CWE-352, CWE-362, CWE-377, CWE-384, CWE-489, CWE-502, CWE-506, CWE-532, CWE-601, CWE-611, CWE-614, CWE-639, CWE-643, CWE-681, CWE-759, CWE-798, CWE-862, CWE-915, CWE-918, CWE-942, CWE-943, CWE-1236, CWE-1321, CWE-1333, CWE-1336, CWE-1357
 
 ## How coverage is scored
 
@@ -36,6 +36,7 @@ counts as a detection. See `docs/SCANNER_INTEGRATION.md`.
 | Test case | File | CWE | Severity | Expected | Markers |
 |---|---|---|---|---|---|
 | Insecure deserialisation via ObjectInputStream | [`deserialization-object-input-stream.java`](../vulns/java/deserialization-object-input-stream.java) | CWE-502 | critical | yes | 2 vuln / 2 safe |
+| Sensitive data exposure via debug logging | [`cwe-215-java.java`](../vulns/java/cwe-215-java.java) | CWE-215 | high | yes | 2 vuln / 2 safe |
 | SQL injection via Statement string concatenation | [`sqli-statement-concat.java`](../vulns/java/sqli-statement-concat.java) | CWE-89 | critical | yes | 2 vuln / 1 safe |
 | Reflected XSS via HttpServletResponse writer | [`xss-response-writer.java`](../vulns/java/xss-response-writer.java) | CWE-79 | high | yes | 2 vuln / 2 safe |
 | XXE via unconfigured DocumentBuilderFactory | [`xxe-document-builder.java`](../vulns/java/xxe-document-builder.java) | CWE-611 | high | yes | 2 vuln / 1 safe |

diff --git a/vulns/VULNERABILITY_CATALOG.json b/vulns/VULNERABILITY_CATALOG.json
@@ -2,10 +2,10 @@
   "schema": "threatcrush-testbed-catalog/1",
   "note": "Generated by scripts/generate-catalog.py \u2014 do not edit by hand.",
   "totals": {
-    "test_cases": 62,
-    "expected_detections": 62,
-    "vulnerable_markers": 123,
-    "safe_markers": 73,
+    "test_cases": 63,
+    "expected_detections": 63,
+    "vulnerable_markers": 125,
+    "safe_markers": 75,
     "languages": [
       "dotenv",
       "go",
@@ -38,6 +38,7 @@
       "CWE-190",
       "CWE-201",
       "CWE-209",
+      "CWE-215",
       "CWE-256",
       "CWE-295",
       "CWE-321",
@@ -175,6 +176,31 @@
         56
       ]
     },
+    {
+      "id": "java-information-exposure-debug-log",
+      "file": "vulns/java/cwe-215-java.java",
+      "title": "Sensitive data exposure via debug logging",
+      "category": "java",
+      "language": "java",
+      "cwe": "CWE-215",
+      "cwes": [
+        "CWE-215"
+      ],
+      "severity": "high",
+      "expected_detection": true,
+      "description": "A user-controlled request parameter (e.g., a session token or",
+      "detection_target": "Logger.debug called with a sensitive request parameter",
+      "safe_guard": "Every payload is behind the always-false NEVER_RUN constant and",
+      "attribution": "line",
+      "vulnerable_lines": [
+        36,
+        44
+      ],
+      "safe_lines": [
+        57,
+        73
+      ]
+    },
     {
       "id": "java-deserialization-object-input-stream",
       "file": "vulns/java/deserialization-object-input-stream.java",

diff --git a/vulns/java/cwe-215-java.java b/vulns/java/cwe-215-java.java
@@ -0,0 +1,78 @@
+/**
+ * @id java-information-exposure-debug-log
+ * @test-case Sensitive data exposure via debug logging
+ * @cwe CWE-215
+ * @severity high
+ * @language java
+ * @expected-detection true
+ * @description A user-controlled request parameter (e.g., a session token or
+ *              password reset token) is logged in plaintext via a debug logger.
+ *              This exposes sensitive information to anyone with access to the
+ *              application logs, violating CWE-215 (Insertion of Sensitive
+ *              Information Into Debugging Code). The vulnerable code logs the
+ *              full token value without any redaction or masking.
+ * @safe-guard Every payload is behind the always-false NEVER_RUN constant and
+ *             the repository has no Java build file, so nothing is compiled.
+ *             No real credentials or tokens are included in this file.
+ * @detection-target Logger.debug called with a sensitive request parameter
+ *                   (e.g., token, password, session ID) without masking.
+ *
+ * NEVER RUN IN PRODUCTION — intentional test case for scanner validation.
+ */
+package vulns.java;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import javax.servlet.http.HttpServletRequest;
+
+public class InformationExposureDebugLog {
+
+    private static final boolean NEVER_RUN = false;
+    private static final Logger logger = LoggerFactory.getLogger(InformationExposureDebugLog.class);
+
+    public void logTokenVulnerable(HttpServletRequest req) {
+        if (NEVER_RUN) {
+            String token = req.getParameter("reset_token"); // SOURCE
+            // VULNERABLE: CWE-215 - sensitive token logged in plaintext
+            logger.debug("Password reset token for user: {}", token);
+        }
+    }
+
+    public void logSessionVulnerable(HttpServletRequest req) {
+        if (NEVER_RUN) {
+            String sessionId = req.getHeader("Authorization"); // SOURCE
+            // VULNERABLE: CWE-215 - session credential logged in plaintext
+            logger.debug("User session token: {}", sessionId);
+        }
+    }
+
+    /**
+     * Safe counterpart — the scanner should NOT flag this.
+     *
+     * @expected-detection false
+     */
+    public void logTokenSafe(HttpServletRequest req) {
+        if (NEVER_RUN) {
+            String token = req.getParameter("reset_token");
+            // SAFE: token is masked before logging
+            String maskedToken = token != null && token.length() > 4
+                    ? token.substring(0, 4) + "****"
+                    : "****";
+            logger.debug("Password reset token for user: {}", maskedToken);
+        }
+    }
+
+    /**
+     * Safe counterpart — the scanner should NOT flag this.
+     *
+     * @expected-detection false
+     */
+    public void logSessionSafe(HttpServletRequest req) {
+        if (NEVER_RUN) {
+            String sessionId = req.getHeader("Authorization");
+            // SAFE: only a boolean flag is logged, not the actual token
+            boolean hasSession = sessionId != null && !sessionId.isEmpty();
+            logger.debug("User session present: {}", hasSession);
+        }
+    }
+}