What is CVE-2026-31923?

CVE-2026-31923 is a high-severity vulnerability in Apache Apisix, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2026-04-14.

How severe is CVE-2026-31923?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apache Apisix

CVE-2026-31923

Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. This can occur due to `ssl_verify` in openid-connect plugin configuration being set to false by default. This issue affects Apache APISIX: from 0.7 through 3.15.0. Users are recommended to upgrade to version 3.16.0, which fixes the issue.

Published 2026-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-10-22.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Apache Apisix
Apache Software Foundation Apisix — versions 0.7

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

lists.apache.org/thread/0pjs72l7qj83j3srw1l1toyj24bsgkds (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-31923?: CVE-2026-31923 is a high-severity vulnerability in Apache Apisix, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2026-04-14.
How severe is CVE-2026-31923?: High severity. CVSS v3 base score is 7.5 out of 10.