diff --git a/review-enrichment/src/analyzers/secret-scan.ts b/review-enrichment/src/analyzers/secret-scan.ts
index 1f011c2a98..2e491ce07e 100644
--- a/review-enrichment/src/analyzers/secret-scan.ts
+++ b/review-enrichment/src/analyzers/secret-scan.ts
@@ -955,6 +955,47 @@ const RULES: Rule[] = [
     re: /https:\/\/chat\.googleapis\.com\/v1\/spaces\/[A-Za-z0-9_-]+\/messages\?[^\s"']*key=/,
     confidence: "high",
   },
+  {
+    // Managed-database connection strings that embed credentials, like the `cloudinary_url` rule above:
+    // `scheme://<user>:<password>@<host>`. Each requires a NON-empty user:password pair (so an angle-bracket
+    // `<user>:<password>` docs placeholder does not match — `<`/`>` are excluded) AND a distinctive provider
+    // host, so an ordinary `postgres://user:pass@localhost` (no managed host) is never flagged. The host is
+    // followed by a negative lookahead so a look-alike suffix host (`…mongodb.net.evil.com`) can't match.
+    kind: "mongodb_atlas_uri",
+    re: /\bmongodb(?:\+srv)?:\/\/[^\s:/<>]+:[^\s@/<>]+@[a-z0-9.-]+\.mongodb\.net(?![a-z0-9.-])/i,
+    confidence: "high",
+  },
+  {
+    // Neon serverless-Postgres connection string (`…@<host>.neon.tech`).
+    kind: "neon_postgres_uri",
+    re: /\bpostgres(?:ql)?:\/\/[^\s:/<>]+:[^\s@/<>]+@[a-z0-9.-]+\.neon\.tech(?![a-z0-9.-])/i,
+    confidence: "high",
+  },
+  {
+    // Supabase Postgres connection string (`…@db.<ref>.supabase.co`).
+    kind: "supabase_postgres_uri",
+    re: /\bpostgres(?:ql)?:\/\/[^\s:/<>]+:[^\s@/<>]+@[a-z0-9.-]+\.supabase\.co(?![a-z0-9.-])/i,
+    confidence: "high",
+  },
+  {
+    // Upstash Redis connection string (`rediss://default:<password>@<host>.upstash.io`). Upstash uses the
+    // default user, so the user segment may be empty.
+    kind: "upstash_redis_uri",
+    re: /\brediss?:\/\/[^\s:/<>]*:[^\s@/<>]+@[a-z0-9.-]+\.upstash\.io(?![a-z0-9.-])/i,
+    confidence: "high",
+  },
+  {
+    // PlanetScale MySQL connection string (`…@<region>.connect.psdb.cloud`).
+    kind: "planetscale_mysql_uri",
+    re: /\bmysql:\/\/[^\s:/<>]+:[^\s@/<>]+@[a-z0-9.-]+\.psdb\.cloud(?![a-z0-9.-])/i,
+    confidence: "high",
+  },
+  {
+    // CockroachDB Cloud connection string (`…@<host>.cockroachlabs.cloud`).
+    kind: "cockroachdb_uri",
+    re: /\bpostgres(?:ql)?:\/\/[^\s:/<>]+:[^\s@/<>]+@[a-z0-9.-]+\.cockroachlabs\.cloud(?![a-z0-9.-])/i,
+    confidence: "high",
+  },
   {
     // Netlify build-hook URL — the trailing id triggers a production build, like the webhook rules above.
     kind: "netlify_build_hook_url",
diff --git a/review-enrichment/test/secret-scan.test.ts b/review-enrichment/test/secret-scan.test.ts
index 726de47e42..321e2df30d 100644
--- a/review-enrichment/test/secret-scan.test.ts
+++ b/review-enrichment/test/secret-scan.test.ts
@@ -1615,3 +1615,41 @@ test("scanPatch does not flag near-misses of the deployment-hook URL formats", (
     assert.equal(findings.length, 0, `near-miss should not match: ${nm}`);
   }
 });
+
+test("scanPatch flags managed-database connection strings that embed credentials", () => {
+  // `<user>:<password>` fragments joined into a URI at test time — never a contiguous real secret in source.
+  const u = "dbuser";
+  const p = "s3cr3tP" + "w0rd1234";
+  const cases = [
+    ["mongodb_atlas_uri", "mongodb+srv://" + u + ":" + p + "@cluster0.ab12c.mongodb.net/mydb"],
+    ["neon_postgres_uri", "postgresql://" + u + ":" + p + "@ep-cool-name-123.us-east-2.aws.neon.tech/neondb"],
+    ["supabase_postgres_uri", "postgres://" + u + ":" + p + "@db.abcdefghij.supabase.co:5432/postgres"],
+    ["upstash_redis_uri", "rediss://default:" + p + "@apn1-cool-cat-12345.upstash.io:6379"],
+    ["planetscale_mysql_uri", "mysql://" + u + ":" + p + "@aws.connect.psdb.cloud/mydb"],
+    ["cockroachdb_uri", "postgresql://" + u + ":" + p + "@cool-cluster-123.abc.cockroachlabs.cloud:26257/defaultdb"],
+  ];
+  for (const [kind, secret] of cases) {
+    const findings = scanPatch("src/config.ts", hunk([`const c = "${secret}";`]));
+    assert.equal(findings.length, 1, `${kind}: expected exactly one finding, got ${JSON.stringify(findings)}`);
+    assert.equal(findings[0].kind, kind, `${kind}: wrong kind`);
+    assert.equal(findings[0].confidence, "high", `${kind}: wrong confidence`);
+  }
+});
+
+test("scanPatch does not flag connection-string placeholders or non-managed hosts", () => {
+  const p = "s3cr3tP" + "w0rd1234";
+  const nearMisses = [
+    // Angle-bracket docs placeholders — `<user>`/`<password>` are excluded by the rule's charset.
+    "mongodb+srv://<user>:<password>@cluster0.ab12c.mongodb.net/mydb",
+    "postgresql://<user>:<password>@ep-x.neon.tech/db",
+    // A plain local/self-hosted host is not a managed provider, so nothing is flagged.
+    "postgres://dbuser:" + p + "@localhost:5432/postgres",
+    "redis://default:" + p + "@127.0.0.1:6379",
+    // A look-alike suffix host must not match via the provider host prefix.
+    "mongodb+srv://dbuser:" + p + "@cluster0.ab12c.mongodb.net.evil.com/mydb",
+  ];
+  for (const nm of nearMisses) {
+    const findings = scanPatch("src/config.ts", hunk([`const c = "${nm}";`]));
+    assert.equal(findings.length, 0, `near-miss should not match: ${nm}`);
+  }
+});