---
id: CVE-2026-61484
title: >-
  ** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data
  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
summary: >-
  ** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data
  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. Us…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: apache
product: lucy
affected:
  - lucy
published: '2026-08-05'
updated: '2026-09-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-61484'
references:
  - url: 'https://lists.apache.org/thread/942t3pwgz2nrhnklrtyt5zr7g4wqc9cb'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/08/05/5'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00806
epssPercentile: 0.54885
ingestedAt: '2026-09-05T15:41:16.173Z'
---

## Overview

** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data 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.



Lucy is now maintained outside of the ASF at https://github.com/lucysearch . 0.8.0 is no longer affected by this issue, because the offending feature has been removed there.



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

## Affected

- `lucy`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.