What is CVE-2026-46452?

CVE-2026-46452 is a medium-severity vulnerability in Apache Nimble, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-07-24.

How severe is CVE-2026-46452?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Apache Nimble

CVE-2026-46452

Improper Input Validation vulnerability in Apache NimBLE in Mesh Proxy SAR reassembly could result in passing broken data toward application resulting in memory pressure and unstable parsing behavior. This issue affects Apache NimBLE: through 1.9.0. Users are recommended to upgrade to version 1.10.0, which fixes the issue.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.006 (44.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Apache Nimble
Apache Software Foundation Nimble — versions 0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security@apache.org (Patch, patch)
security@apache.org (vendor-advisory, Patch, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-46452?: CVE-2026-46452 is a medium-severity vulnerability in Apache Nimble, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-07-24.
How severe is CVE-2026-46452?: Medium severity. CVSS v3 base score is 5.3 out of 10.