diff --git a/CHANGELOG.md b/CHANGELOG.md
index 26c3f8e..3687037 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Hermes Web UI -- Changelog
 
+## [v0.50.26] fix(sessions): redact sensitive titles in session list and search responses [SECURITY] (#400)
+
+- `api/routes.py`: apply `_redact_text()` to session titles in all four response paths — `/api/sessions` merged list, `/api/sessions/search` empty-q, title-match, and content-match; use `dict(s)` copy before mutating to avoid corrupting the in-memory session cache
+- `tests/test_session_summary_redaction.py`: 2 integration tests verifying `sk-` prefixed secrets in session titles are redacted from both list and search endpoint responses
+- Original PR by @Hinotoi-agent (note: fix commit had a display artifact — `sk-` prefix was visually rendered as `***` in terminal output but the actual bytes were correct and the token was recognized by the redaction engine)
+- 1022 tests total (up from 1020)
+
 ## [v0.50.25] Multi-PR batch: mobile scroll, import timestamps, profile security, mic fallback
 
 ### fix: restore mobile chat scrolling and drawer close (#397)
diff --git a/api/routes.py b/api/routes.py
index 34628f8..d872225 100644
--- a/api/routes.py
+++ b/api/routes.py
@@ -410,11 +410,13 @@ def handle_get(handler, parsed) -> bool:
             deduped_cli = []
         merged = webui_sessions + deduped_cli
         merged.sort(key=lambda s: s.get("updated_at", 0) or 0, reverse=True)
-        # Redact credentials from session titles before returning
+        safe_merged = []
         for s in merged:
-            if isinstance(s.get("title"), str):
-                s["title"] = _redact_text(s["title"])
-        return j(handler, {"sessions": merged, "cli_count": len(deduped_cli)})
+            item = dict(s)
+            if isinstance(item.get("title"), str):
+                item["title"] = _redact_text(item["title"])
+            safe_merged.append(item)
+        return j(handler, {"sessions": safe_merged, "cli_count": len(deduped_cli)})
 
     if parsed.path == "/api/projects":
         return j(handler, {"projects": load_projects()})
@@ -1192,12 +1194,21 @@ def _handle_sessions_search(handler, parsed):
     content_search = qs.get("content", ["1"])[0] == "1"
     depth = int(qs.get("depth", ["5"])[0])
     if not q:
-        return j(handler, {"sessions": all_sessions()})
+        safe_sessions = []
+        for s in all_sessions():
+            item = dict(s)
+            if isinstance(item.get("title"), str):
+                item["title"] = _redact_text(item["title"])
+            safe_sessions.append(item)
+        return j(handler, {"sessions": safe_sessions})
     results = []
     for s in all_sessions():
         title_match = q in (s.get("title") or "").lower()
         if title_match:
-            results.append(dict(s, match_type="title"))
+            item = dict(s, match_type="title")
+            if isinstance(item.get("title"), str):
+                item["title"] = _redact_text(item["title"])
+            results.append(item)
             continue
         if content_search:
             try:
@@ -1212,7 +1223,10 @@ def _handle_sessions_search(handler, parsed):
                             if isinstance(p, dict) and p.get("type") == "text"
                         )
                     if q in str(c).lower():
-                        results.append(dict(s, match_type="content"))
+                        item = dict(s, match_type="content")
+                        if isinstance(item.get("title"), str):
+                            item["title"] = _redact_text(item["title"])
+                        results.append(item)
                         break
             except (KeyError, Exception):
                 pass
diff --git a/static/index.html b/static/index.html
index 34c9b73..a61aa0c 100644
--- a/static/index.html
+++ b/static/index.html
@@ -535,7 +535,7 @@
                 <div class="settings-section-title">System</div>
                 <div class="settings-section-meta">Instance version and access controls.</div>
               </div>
-              <span class="settings-version-badge">v0.50.25</span>
+              <span class="settings-version-badge">v0.50.26</span>
             </div>
             <div class="settings-field" style="border-top:1px solid var(--border);padding-top:12px;margin-top:8px">
               <label for="settingsPassword" data-i18n="settings_label_password">Access Password</label>
diff --git a/tests/test_session_summary_redaction.py b/tests/test_session_summary_redaction.py
new file mode 100644
index 0000000..dfa6728
--- /dev/null
+++ b/tests/test_session_summary_redaction.py
@@ -0,0 +1,66 @@
+import json
+import pathlib
+import sys
+import time
+import urllib.parse
+import urllib.request
+import uuid
+
+import pytest
+
+sys.path.insert(0, str(pathlib.Path(__file__).parent.parent.parent))
+
+_needs_server = pytest.mark.usefixtures("test_server")
+BASE = "http://127.0.0.1:8788"
+_FULL_SECRET = "sk-" + ("B" * 24)
+
+
+def _get(path):
+    with urllib.request.urlopen(BASE + path, timeout=10) as r:
+        return json.loads(r.read())
+
+
+def _write_session_with_secret_title():
+    from tests.conftest import TEST_STATE_DIR
+
+    sid = "sec_summary_" + uuid.uuid4().hex[:8]
+    sessions_dir = TEST_STATE_DIR / "sessions"
+    sessions_dir.mkdir(parents=True, exist_ok=True)
+    now = time.time()
+    (sessions_dir / f"{sid}.json").write_text(json.dumps({
+        "session_id": sid,
+        "title": f"session with {_FULL_SECRET}",
+        "workspace": "/tmp",
+        "model": "test",
+        "created_at": now,
+        "updated_at": now,
+        "pinned": False,
+        "archived": False,
+        "project_id": None,
+        "profile": "default",
+        "input_tokens": 0,
+        "output_tokens": 0,
+        "estimated_cost": None,
+        "personality": None,
+        "messages": [],
+        "tool_calls": [],
+    }))
+    return sid
+
+
+@_needs_server
+def test_api_sessions_search_redacts_titles(test_server):
+    sid = _write_session_with_secret_title()
+    data = _get("/api/sessions/search?q=" + urllib.parse.quote("B" * 24))
+    dump = json.dumps(data)
+    assert sid in dump
+    assert _FULL_SECRET not in dump
+
+
+@_needs_server
+def test_api_sessions_list_redacts_secret_titles(test_server):
+    sid = _write_session_with_secret_title()
+    data = _get("/api/sessions")
+    dump = json.dumps(data)
+    assert sid in dump
+    assert _FULL_SECRET not in dump