CVE-2026-61483: Apache Lucy: QueryParser unbounded recursion on deeply-nested query -> C-stack-overflow DoS

[Piotr Karwasz <pkarwasz () apache org>]

Severity: low 

Affected versions:

- Apache Lucy (Lucy): all versions

Description:

** UNSUPPORTED WHEN ASSIGNED ** Uncontrolled Recursion vulnerability in Apache Lucy.

This issue affects Apache Lucy: all versions.

As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an 
alternative or restrict access to the instance to trusted users.

NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

References:

https://attic.apache.org/projects/lucy.html
https://www.cve.org/CVERecord?id=CVE-2026-61483