What is CVE-2021-26923?

CVE-2021-26923 is a high-severity vulnerability in Argoproj Argo Cd, classified under Information Disclosure. CVSS score: 7.5/10. Published 2021-03-15.

How severe is CVE-2021-26923?

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

Information disclosure in Argoproj Argo Cd

CVE-2021-26923

An issue was discovered in Argo CD before 1.8.4. Accessing the endpoint /api/version leaks internal information for the system, and this endpoint is not protected with authentication.

Vulnerability class: Information Disclosure

Published 2021-03-15 · 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: 0.014 (72.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Argoproj Argo Cd

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

github.com/argoproj/argo-cd/compare/v1.8.3...v1.8.4 (Patch, Third Party Advisory)
github.com/argoproj/argo-cd/security/advisories/GHSA-pfgj-mh5m-2p48 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-26923?: CVE-2021-26923 is a high-severity vulnerability in Argoproj Argo Cd, classified under Information Disclosure. CVSS score: 7.5/10. Published 2021-03-15.
How severe is CVE-2021-26923?: High severity. CVSS v3 base score is 7.5 out of 10.