diff --git a/docs/development-setup.md b/docs/development-setup.md
index 60a427c66..9363cda74 100644
--- a/docs/development-setup.md
+++ b/docs/development-setup.md
@@ -68,6 +68,7 @@ UV_PROJECT_ENVIRONMENT="${MOVIEPILOT_WORKSPACE}/.venv-test" \
 [CVE-2026-111497 的官方修复](https://github.com/google/brotli/commit/0ed4268a4401abcb4472096340477cf4af7d1a2b)。
 源码分支的包版本仍为 1.2.0，不能仅凭版本字符串判断补丁是否存在；1.2.1 发布分支
 尚未声明无 GIL 支持，不能直接替换 free-threaded 的源码依赖。
+发布审计脚本会将这个已核实修复提交按 1.2.1 版本匹配漏洞公告，安装仍使用锁文件中的源码地址。
 
 ### 2.1 本地启动脚本
 
diff --git a/scripts/normalize_audit_requirements.py b/scripts/normalize_audit_requirements.py
index b6575d447..64fc2c19f 100644
--- a/scripts/normalize_audit_requirements.py
+++ b/scripts/normalize_audit_requirements.py
@@ -14,6 +14,15 @@ DIRECT_REFERENCE = re.compile(
     r"(?P<url>\S+)(?P<suffix>.*)$"
 )
 
+# free-threaded Brotli 保留 1.2.0 包元数据以使用无 GIL 源码，但源码提交已包含
+# 1.2.1 的安全修复；仅在漏洞数据库匹配时使用修复版本，不改变实际安装来源。
+AUDIT_VERSION_OVERRIDES = {
+    (
+        "brotli",
+        "https://github.com/google/brotli/archive/0ed4268a4401abcb4472096340477cf4af7d1a2b.tar.gz",
+    ): "1.2.1",
+}
+
 
 def _canonicalize_name(name: str) -> str:
     """
@@ -30,6 +39,7 @@ def _locked_url_versions(lock_file: Path) -> dict[tuple[str, str], str]:
         document = tomllib.load(file)
 
     versions: dict[tuple[str, str], str] = {}
+    locked_versions: dict[tuple[str, str], str] = {}
     for package in document.get("package", []):
         source = package.get("source") or {}
         url = source.get("url")
@@ -38,8 +48,12 @@ def _locked_url_versions(lock_file: Path) -> dict[tuple[str, str], str]:
         if not all(isinstance(value, str) and value for value in (url, name, version)):
             continue
         key = (_canonicalize_name(name), url)
-        previous = versions.setdefault(key, version)
-        if previous != version:
+        locked_previous = locked_versions.setdefault(key, version)
+        if locked_previous != version:
+            raise ValueError(f"锁文件包含冲突的 URL 依赖版本：{name} @ {url}")
+        audit_version = AUDIT_VERSION_OVERRIDES.get(key, version)
+        previous = versions.setdefault(key, audit_version)
+        if previous != audit_version:
             raise ValueError(f"锁文件包含冲突的 URL 依赖版本：{name} @ {url}")
     return versions
 
diff --git a/tests/test_release_supply_chain.py b/tests/test_release_supply_chain.py
index 26b440bff..22a6fc002 100644
--- a/tests/test_release_supply_chain.py
+++ b/tests/test_release_supply_chain.py
@@ -199,6 +199,26 @@ source = { url = "https://example.com/brotli.tar.gz" }
     assert "@ https://example.com/brotli.tar.gz" not in normalized
 
 
+def test_patched_free_threaded_brotli_uses_security_version_for_audit(tmp_path: Path) -> None:
+    """
+    无 GIL Brotli 源码保留 1.2.0 元数据时，审计应按已包含修复的 1.2.1 匹配公告。
+    """
+    source = (
+        "https://github.com/google/brotli/archive/"
+        "0ed4268a4401abcb4472096340477cf4af7d1a2b.tar.gz"
+    )
+    lock_file = tmp_path / "uv.lock"
+    lock_file.write_text(
+        f'version = 1\n\n[[package]]\nname = "brotli"\nversion = "1.2.0"\n'
+        f'source = {{ url = "{source}" }}\n',
+        encoding="utf-8",
+    )
+
+    normalized = normalize_requirements(f"brotli @ {source}\n", lock_file)
+
+    assert normalized == "brotli==1.2.1\n"
+
+
 def test_direct_url_audit_requirement_rejects_unlocked_source(tmp_path: Path) -> None:
     """
     不能把未匹配锁文件来源的 URL 依赖伪装为已审计版本。