What is CVE-2026-34839?

CVE-2026-34839 is a medium-severity vulnerability in Nicolargo Glances, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-04-21.

How severe is CVE-2026-34839?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Nicolargo Glances

CVE-2026-34839

Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, the Glances web server exposes a REST API (`/api/4/*`) that is accessible without authentication and allows cross-origin requests from any origin due…

Vulnerability class: Information Disclosure

EPSS: 0.004 (33.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Nicolargo Glances — versions < 4.5.4

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34839?: CVE-2026-34839 is a medium-severity vulnerability in Nicolargo Glances, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-04-21.
How severe is CVE-2026-34839?: Medium severity. CVSS v3 base score is 6.5 out of 10.