Buffer overflow in Apache Lucy
CVE-2026-61486
** UNSUPPORTED WHEN ASSIGNED ** Stack-based Buffer Overflow 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 . This issue has been fixed in 0.8.0 there. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Vulnerability class: Buffer Overflow
EPSS: 0.006 (48.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Lucy
- Apache Software Foundation Lucy — versions 0
Weakness classification (CWE)
References
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-61486?
- CVE-2026-61486 is a critical-severity vulnerability in Apache Lucy, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-08-05.
- How severe is CVE-2026-61486?
- Critical severity. CVSS v3 base score is 9.8 out of 10.