diff --git a/src/logging/diagnostic-support-redaction.ts b/src/logging/diagnostic-support-redaction.ts
index caa926f8c7e..60bb7926e69 100644
--- a/src/logging/diagnostic-support-redaction.ts
+++ b/src/logging/diagnostic-support-redaction.ts
@@ -20,7 +20,8 @@ const COOKIE_HEADER_RE = /\b(Cookie|Set-Cookie)\s*:\s*[^\r\n]+/giu;
 const AWS_ACCESS_KEY_ID_RE = /\b(?:AKIA|ASIA)[A-Z0-9]{16}\b/gu;
 const JWT_RE = /\beyJ[A-Za-z0-9_-]{10,}\.[A-Za-z0-9_-]{10,}\.[A-Za-z0-9_-]{10,}\b/gu;
 const URL_USERINFO_RE = /\b([a-z][a-z0-9+.-]*:\/\/)([^/@\s:?#]+)(?::([^/@\s?#]+))?@/giu;
-const URL_PARAM_RE = /([?&])([^=&\s]+)=([^&#\s]+)/giu;
+const URL_SENSITIVE_PARAM_RE =
+  /([?&])(api[-_]?key|apikey|access[-_]?token|auth[-_]?token|client[-_]?secret|hook[-_]?token|refresh[-_]?token|token|key|secret|password|pass|passwd|auth|signature)=([^&#\s)"'<>]+)(?:&[^#\s)"'<>]*)?/giu;
 const EMAIL_RE = /\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\b/giu;
 const MATRIX_USER_ID_RE = /@[A-Za-z0-9._=-]+:[A-Za-z0-9.-]+/gu;
 const MATRIX_ROOM_ID_RE = /![A-Za-z0-9._=-]+:[A-Za-z0-9.-]+/gu;
@@ -306,7 +307,7 @@ function redactUrlSecretsForSupport(value: string): string {
     .replace(URL_USERINFO_RE, (_match, scheme: string, _username: string, password?: string) =>
       password ? `${scheme}<redacted>:<redacted>@` : `${scheme}<redacted>@`,
     )
-    .replace(URL_PARAM_RE, (match, prefix: string, key: string) =>
+    .replace(URL_SENSITIVE_PARAM_RE, (match, prefix: string, key: string) =>
       isSensitiveUrlQueryParamName(key) ? `${prefix}${key}=<redacted>` : match,
     );
 }
diff --git a/src/logging/redact.test.ts b/src/logging/redact.test.ts
index 355b6afc54b..0d50c1a1442 100644
--- a/src/logging/redact.test.ts
+++ b/src/logging/redact.test.ts
@@ -61,6 +61,24 @@ describe("redactSensitiveText", () => {
     expect(output).toBe("gog gmail watch serve --hook-token abcdef…ghij");
   });
 
+  it("masks sensitive URL query parameters", () => {
+    const input = "connect https://user.example/sync?access_token=abcdef1234567890ghij&safe=value";
+    const output = redactSensitiveText(input, {
+      mode: "tools",
+      patterns: defaults,
+    });
+    expect(output).toBe("connect https://user.example/sync?access_token=abcdef…ghij&safe=value");
+  });
+
+  it("masks short URL query tokens fully", () => {
+    const input = "cdp=https://browserless.example.com/?token=supersecret123";
+    const output = redactSensitiveText(input, {
+      mode: "tools",
+      patterns: defaults,
+    });
+    expect(output).toBe("cdp=https://browserless.example.com/?token=***");
+  });
+
   it("masks JSON fields", () => {
     const input = '{"token":"abcdef1234567890ghij"}';
     const output = redactSensitiveText(input, {
diff --git a/src/logging/redact.ts b/src/logging/redact.ts
index e377f26161f..cc13c2e2c9e 100644
--- a/src/logging/redact.ts
+++ b/src/logging/redact.ts
@@ -18,6 +18,8 @@ const DEFAULT_REDACT_PATTERNS: string[] = [
   String.raw`"(?:apiKey|token|secret|password|passwd|accessToken|refreshToken)"\s*:\s*"([^"]+)"`,
   // CLI flags.
   String.raw`--(?:api[-_]?key|hook[-_]?token|token|secret|password|passwd)\s+(["']?)([^\s"']+)\1`,
+  // URL query credentials.
+  String.raw`/([?&](?:api[-_]?key|apikey|access[-_]?token|auth[-_]?token|client[-_]?secret|hook[-_]?token|refresh[-_]?token|token|key|secret|password|pass|passwd|auth|signature)=)([^&#\s)"'<>]+)/giu`,
   // Authorization headers.
   String.raw`Authorization\s*[:=]\s*Bearer\s+([A-Za-z0-9._\-+=]+)`,
   String.raw`\bBearer\s+([A-Za-z0-9._\-+=]{18,})\b`,