What is CVE-2026-16553?

CVE-2026-16553 is a medium-severity vulnerability in GitLab, classified under Insufficiently Protected Credentials. CVSS score: 5.4/10. Published 2026-07-29.

How severe is CVE-2026-16553?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in GitLab

CVE-2026-16553

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed some sensitive information to be disclosed to an unintended host due to improper handling of upstream requests in virtual registries.

EPSS: 0.003 (17.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L.

Affected products

Gitlab — versions 19.2, 19.1, 18.8

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

cve@gitlab.com (Broken Link)
cve@gitlab.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-16553?: CVE-2026-16553 is a medium-severity vulnerability in GitLab, classified under Insufficiently Protected Credentials. CVSS score: 5.4/10. Published 2026-07-29.
How severe is CVE-2026-16553?: Medium severity. CVSS v3 base score is 5.4 out of 10.