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High severityNVD Advisory· Published Aug 25, 2025· Updated Apr 15, 2026

CVE-2025-57802

CVE-2025-57802

Description

Airlink's Daemon interfaces with Docker and the Panel to provide secure access for controlling instances via the Panel. In version 1.0.0, an attacker with access to the affected container can create symbolic links inside the mounted directory (/app/data). Because the container bind-mounts an arbitrary host path, these symlinks can point to sensitive locations on the host filesystem. When the application or other processes follow these symlinks, the attacker can gain unauthorized read access to host files outside the container. This issue has been patched in version 1.0.1.

Affected products

1

Patches

1
5e6222dd9eec

fix for CVE

https://github.com/airlinklabs/daemonprivt00Aug 23, 2025via osv
commit
1 file changed · +18 −5
  • src/routes/fileSystem.ts+18 −5 modified
    @@ -6,11 +6,24 @@ import { validateContainerId, validatePath, validateFileName } from '../utils/va
 
 const router = Router();
 
-const sanitizePath = (base: string, relativePath: string): string => {
-    const fullPath = path.join(base, relativePath);
+const sanitizePath = async (base: string, relativePath: string): Promise<string> => {
+    const fullPath = path.resolve(base, relativePath);
+
     if (!fullPath.startsWith(base)) {
         throw new Error('Invalid path: Directory traversal is not allowed.');
     }
+
+    try {
+        const stats = await fs.lstat(fullPath);
+        if (stats.isSymbolicLink()) {
+            throw new Error('Invalid path: Symlinks are not allowed.');
+        }
+    } catch (err: any) {
+        if (err.code !== 'ENOENT') { // Ignore "file not found", because we're creating it later
+            throw err;
+        }
+    }
+
     return fullPath;
 };
 
@@ -350,7 +363,7 @@ router.post('/fs/upload', async (req: Request, res: Response) => {
 
         // Create the base directory if it doesn't exist
         const baseDirectory = path.resolve(`volumes/${id}`);
-        const filePath = sanitizePath(baseDirectory, targetPath);
+        const filePath = await sanitizePath(baseDirectory, targetPath);
         const dir = path.dirname(filePath);
 
         try {
@@ -412,7 +425,7 @@ router.post('/fs/create-empty-file', async (req: Request, res: Response) => {
         console.log(`Normalized target path: ${targetPath}`);
 
         const baseDirectory = path.resolve(`volumes/${id}`);
-        const filePath = sanitizePath(baseDirectory, targetPath);
+        const filePath= await sanitizePath(baseDirectory, targetPath);
         const dir = path.dirname(filePath);
 
         try {
@@ -513,7 +526,7 @@ router.post('/fs/append-file', async (req: Request, res: Response) => {
         }
 
         const baseDirectory = path.resolve(`volumes/${id}`);
-        const filePath = sanitizePath(baseDirectory, targetPath);
+        const filePath= await sanitizePath(baseDirectory, targetPath);
 
         try {
             if (typeof content === 'string') {

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

2

News mentions

0

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