diff --git a/src/omniroute-combos.ts b/src/omniroute-combos.ts
index 95e5bab..eb3f43a 100644
--- a/src/omniroute-combos.ts
+++ b/src/omniroute-combos.ts
@@ -10,8 +10,9 @@ import { REQUEST_TIMEOUT } from './constants.js';
 import { warn, debug } from './logger.js';
 
 export function sanitizeForLog(value: string): string {
-  // Remove all control characters except tab (0x09)
-  return value.replace(/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/g, '');
+  // Remove all ASCII control characters except tab (0x09),
+  // plus Unicode line/paragraph separators (U+2028 / U+2029).
+  return value.replace(/[\x00-\x08\x0A-\x1F\x7F\u2028\u2029]/g, '');
 }
 
 /**
diff --git a/test/omniroute-combos.test.mjs b/test/omniroute-combos.test.mjs
new file mode 100644
index 0000000..b3e3cc9
--- /dev/null
+++ b/test/omniroute-combos.test.mjs
@@ -0,0 +1,25 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import { sanitizeForLog } from '../dist/src/omniroute-combos.js';
+
+test('sanitizeForLog removes every ASCII control character except tab', () => {
+  for (let code = 0; code <= 0x1f; code += 1) {
+    const value = String.fromCharCode(code);
+    assert.equal(
+      sanitizeForLog(`before${value}after`),
+      code === 0x09 ? `before\tafter` : 'beforeafter',
+      `unexpected handling for control byte 0x${code.toString(16).padStart(2, '0')}`,
+    );
+  }
+
+  assert.equal(sanitizeForLog(`before${String.fromCharCode(0x7f)}after`), 'beforeafter');
+});
+
+test('sanitizeForLog prevents CR/LF log-line injection and preserves printable Unicode', () => {
+  assert.equal(
+    sanitizeForLog('combo\n[ERROR] forged\rrewritten\u2028forged2\u2029rewritten2'),
+    'combo[ERROR] forgedrewrittenforged2rewritten2',
+  );
+  assert.equal(sanitizeForLog('Modell ✓ — 日本語'), 'Modell ✓ — 日本語');
+});