What is CVE-2026-31924?

CVE-2026-31924 is a medium-severity vulnerability in Apache Apisix, classified under Cleartext Transmission of Sensitive Information. CVSS score: 5.3/10. Published 2026-04-14.

How severe is CVE-2026-31924?

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

Vulnerability in Apache Apisix

CVE-2026-31924

Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. tencent-cloud-cls log export uses plaintext HTTP This issue affects Apache APISIX: from 2.99.0 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 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (27.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001

Affected products

Apache Apisix
Apache Software Foundation Apisix — versions 2.99.0

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

lists.apache.org/thread/sqxjjlt87c1q28db28ztdxylm5pgwohq (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-31924?: CVE-2026-31924 is a medium-severity vulnerability in Apache Apisix, classified under Cleartext Transmission of Sensitive Information. CVSS score: 5.3/10. Published 2026-04-14.
How severe is CVE-2026-31924?: Medium severity. CVSS v3 base score is 5.3 out of 10.