CVE-2026-40027: Path Traversal in ALEAPP NQ Vault Artifact Parser

The core of this vulnerability lies in the parser's handling of the filenamefrom value, which is derived from a database. The parser directly uses this value to construct the output filename without proper sanitization. An attacker can craft a malicious filenamefrom payload containing path traversal sequences (e.g., ../../../outside_written.bin) to escape the intended output directory. This allows them to write files to arbitrary locations on the system. Successful exploitation could involve overwriting critical executable files or configuration files, leading to remote code execution. The impact is particularly severe because it allows for arbitrary file writes, bypassing typical directory access controls.

1. Reserved2026-04-08
2. Published2026-04-08
3. Modified2026-04-09
4. EPSS updated2026-04-16

The primary mitigation for CVE-2026-40027 is to upgrade to a patched version of the ALEAPP NQ Vault Artifact Parser. Until a patch is available, consider implementing input validation on the filenamefrom value before it's used to construct the output filename. This could involve whitelisting allowed characters or using a canonicalization function to resolve relative paths. As a temporary workaround, restrict write access to the report output directory to only the parser process. Monitor system logs for unusual file creation activity within the report output directory, looking for files with unexpected names or locations.