diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 0f410ce58..bcb1810d1 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -22,7 +22,7 @@
         "vue-i18n": "^11.1.12",
         "vue-router": "^4.5.0",
         "webpack": "^5.94.0",
-        "xlsx": "^0.18.5"
+        "xlsx": "file:../packages/xlsx-0.20.2.tgz"
       },
       "devDependencies": {
         "@tsconfig/node22": "^22.0.1",
@@ -1895,15 +1895,6 @@
         "acorn": "^8.14.0"
       }
     },
-    "node_modules/adler-32": {
-      "version": "1.3.1",
-      "resolved": "https://mirrors.tencent.com/npm/adler-32/-/adler-32-1.3.1.tgz",
-      "integrity": "sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A==",
-      "license": "Apache-2.0",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/ajv": {
       "version": "8.17.1",
       "resolved": "https://mirrors.tencent.com/npm/ajv/-/ajv-8.17.1.tgz",
@@ -2075,19 +2066,6 @@
       ],
       "license": "CC-BY-4.0"
     },
-    "node_modules/cfb": {
-      "version": "1.2.2",
-      "resolved": "https://mirrors.tencent.com/npm/cfb/-/cfb-1.2.2.tgz",
-      "integrity": "sha512-KfdUZsSOw19/ObEWasvBP/Ac4reZvAGauZhs6S/gqNhXhI7cKwvlH7ulj+dOEYnca4bm4SGo8C1bTAQvnTjgQA==",
-      "license": "Apache-2.0",
-      "dependencies": {
-        "adler-32": "~1.3.0",
-        "crc-32": "~1.2.0"
-      },
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/chrome-trace-event": {
       "version": "1.0.4",
       "resolved": "https://mirrors.tencent.com/npm/chrome-trace-event/-/chrome-trace-event-1.0.4.tgz",
@@ -2097,15 +2075,6 @@
         "node": ">=6.0"
       }
     },
-    "node_modules/codepage": {
-      "version": "1.15.0",
-      "resolved": "https://mirrors.tencent.com/npm/codepage/-/codepage-1.15.0.tgz",
-      "integrity": "sha512-3g6NUTPd/YtuuGrhMnOMRjFc+LJw/bnMp3+0r/Wcz3IXUuCosKRJvMphm5+Q+bvTVGcJJuRvVLuYba+WojaFaA==",
-      "license": "Apache-2.0",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/combined-stream": {
       "version": "1.0.8",
       "resolved": "https://mirrors.tencent.com/npm/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -2142,18 +2111,6 @@
         "url": "https://github.com/sponsors/mesqueeb"
       }
     },
-    "node_modules/crc-32": {
-      "version": "1.2.2",
-      "resolved": "https://mirrors.tencent.com/npm/crc-32/-/crc-32-1.2.2.tgz",
-      "integrity": "sha512-ROmzCKrTnOwybPcJApAA6WBWij23HVfGVNKqqrZpuyZOHqK2CwHSvpGuyt/UNNvaIjEd8X5IFGp4Mh+Ie1IHJQ==",
-      "license": "Apache-2.0",
-      "bin": {
-        "crc32": "bin/crc32.njs"
-      },
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://mirrors.tencent.com/npm/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -2523,15 +2480,6 @@
         "node": ">= 6"
       }
     },
-    "node_modules/frac": {
-      "version": "1.1.2",
-      "resolved": "https://mirrors.tencent.com/npm/frac/-/frac-1.1.2.tgz",
-      "integrity": "sha512-w/XBfkibaTl3YDqASwfDUqkna4Z2p9cFSr1aHDt0WoMTECnRfBOv2WArlZILlqgWlmdIlALXGpM2AOhEk5W3IA==",
-      "license": "Apache-2.0",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/fsevents": {
       "version": "2.3.3",
       "resolved": "https://mirrors.tencent.com/npm/fsevents/-/fsevents-2.3.3.tgz",
@@ -3451,18 +3399,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/ssf": {
-      "version": "0.11.2",
-      "resolved": "https://mirrors.tencent.com/npm/ssf/-/ssf-0.11.2.tgz",
-      "integrity": "sha512-+idbmIXoYET47hH+d7dfm2epdOMUDjqcB4648sTZ+t2JwoyBFL/insLfB/racrDmsKB3diwsDA696pZMieAC5g==",
-      "license": "Apache-2.0",
-      "dependencies": {
-        "frac": "~1.1.2"
-      },
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/superjson": {
       "version": "2.2.2",
       "resolved": "https://mirrors.tencent.com/npm/superjson/-/superjson-2.2.2.tgz",
@@ -3969,38 +3905,11 @@
         "node": "^18.17.0 || >=20.5.0"
       }
     },
-    "node_modules/wmf": {
-      "version": "1.0.2",
-      "resolved": "https://mirrors.tencent.com/npm/wmf/-/wmf-1.0.2.tgz",
-      "integrity": "sha512-/p9K7bEh0Dj6WbXg4JG0xvLQmIadrner1bi45VMJTfnbVHsc7yIajZyoSoK60/dtVBs12Fm6WkUI5/3WAVsNMw==",
-      "license": "Apache-2.0",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
-    "node_modules/word": {
-      "version": "0.3.0",
-      "resolved": "https://mirrors.tencent.com/npm/word/-/word-0.3.0.tgz",
-      "integrity": "sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA==",
-      "license": "Apache-2.0",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/xlsx": {
-      "version": "0.18.5",
-      "resolved": "https://mirrors.tencent.com/npm/xlsx/-/xlsx-0.18.5.tgz",
-      "integrity": "sha512-dmg3LCjBPHZnQp5/F/+nnTa+miPJxUXB6vtk42YjBBKayDNagxGEeIdWApkYPOf3Z3pm3k62Knjzp7lMeTEtFQ==",
+      "version": "0.20.2",
+      "resolved": "file:../packages/xlsx-0.20.2.tgz",
+      "integrity": "sha512-+nKZ39+nvK7Qq6i0PvWWRA4j/EkfWOtkP/YhMtupm+lJIiHxUrgTr1CcKv1nBk1rHtkRRQ3O2+Ih/q/sA+FXZA==",
       "license": "Apache-2.0",
-      "dependencies": {
-        "adler-32": "~1.3.0",
-        "cfb": "~1.2.1",
-        "codepage": "~1.15.0",
-        "crc-32": "~1.2.1",
-        "ssf": "~0.11.2",
-        "wmf": "~1.0.1",
-        "word": "~0.3.0"
-      },
       "bin": {
         "xlsx": "bin/xlsx.njs"
       },
diff --git a/frontend/package.json b/frontend/package.json
index 8d88fe557..93e9d3b54 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -26,7 +26,7 @@
     "vue-i18n": "^11.1.12",
     "vue-router": "^4.5.0",
     "webpack": "^5.94.0",
-    "xlsx": "^0.18.5"
+    "xlsx": "file:../packages/xlsx-0.20.2.tgz"
   },
   "devDependencies": {
     "@tsconfig/node22": "^22.0.1",
diff --git a/packages/xlsx-0.20.2.tgz b/packages/xlsx-0.20.2.tgz
new file mode 100644
index 000000000..d3ee3a238
Binary files /dev/null and b/packages/xlsx-0.20.2.tgz differ