What is CVE-2026-41603?

CVE-2026-41603 is a high-severity vulnerability in Apache Thrift, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 7.4/10. Published 2026-04-28.

How severe is CVE-2026-41603?

High severity. CVSS v3 base score is 7.4 out of 10.

Auth bypass in Apache Thrift

CVE-2026-41603

Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

EPSS: 0.000 (8.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Apache Thrift
Apache Software Foundation Thrift — versions 0

Weakness classification (CWE)

CWE-297 — Improper Validation of Certificate with Host Mismatch
CWE-306 — Missing Authentication for Critical Function

References

security@apache.org (vendor-advisory, Patch, Mailing List, Release Notes)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)

Frequently asked questions

What is CVE-2026-41603?: CVE-2026-41603 is a high-severity vulnerability in Apache Thrift, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 7.4/10. Published 2026-04-28.
How severe is CVE-2026-41603?: High severity. CVSS v3 base score is 7.4 out of 10.