What is CVE-2019-19324?

CVE-2019-19324 is a high-severity vulnerability in Xmidt Cjwt, classified under Always-Incorrect Control Flow Implementation. CVSS score: 7.5/10. Published 2020-03-20.

How severe is CVE-2019-19324?

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

Vulnerability in Xmidt Cjwt

CVE-2019-19324

Xmidt cjwt through 1.0.1 before 2019-11-25 maps unsupported algorithms to alg=none, which sometimes leads to untrusted accidental JWT acceptance.

Published 2020-03-20 · 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:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Xmidt Cjwt

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

github.com/xmidt-org/cjwt/commit/9304d3e94242c1a6df77b21bde0e949392e1040a (Patch, Third Party Advisory)
github.com/xmidt-org/cjwt/pull/29 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2019-19324?: CVE-2019-19324 is a high-severity vulnerability in Xmidt Cjwt, classified under Always-Incorrect Control Flow Implementation. CVSS score: 7.5/10. Published 2020-03-20.
How severe is CVE-2019-19324?: High severity. CVSS v3 base score is 7.5 out of 10.