CVE-2026-16553

MEDIUM 5.4 ALL-YEARS

Published 2026-07-29 · Last modified 2026-07-29 · GitLab · NVD: Analyzed

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.

LIMITED SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 27th percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable no

Impact if exploited

5.4CVSS 3.1 · MEDIUM · CNA

ConfidentialityLow
IntegrityNone
AvailabilityLow

What an attacker needs

✓Access: Reachable over the network — no local access needed
⚠Privileges: Requires a low-privilege account
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Gitlab

Products Gitlab

Weakness (CWE)

CWE-522: : Insufficiently Protected Credentials

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Gitlab	Gitlab	≥ 18.8.0 and < 19.0.5
Gitlab	Gitlab	≥ 19.1.0 and < 19.1.3
Gitlab	Gitlab	19.2.0

All CVSS metrics

MEDIUM 5.4 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
MEDIUM 5.4 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

References

Advisories

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/ Release NotesVendor AdvisoryCVE record · GitLab · Updated 2026-07-29T18:59:46.164Z
NVD · CVE-2026-16553 · Updated 2026-08-03T14:14:35.333
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-50475 ADVISORYEUVD · EUVD-2026-50475

Technical & other

https://gitlab.com/gitlab-org/gitlab/-/work_items/603269 Broken LinkCVE record · GitLab · Updated 2026-07-29T18:59:46.164Z
NVD · CVE-2026-16553 · Updated 2026-08-03T14:14:35.333

Sources: NVD · CVE.org · All sources and attribution · EPSS