CVE-2026-15975

HIGH 7.5 ALL-YEARS

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

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.8 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an unauthenticated user to cause a denial of service due to insufficient resource throttling when processing merge request discussions.

ELEVATED IMPACT

Severe if exploited (CVSS 7.5), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.5%chance of exploitation in 30 days · 43rd percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable yes

Impact if exploited

7.5CVSS 3.1 · HIGH · CNA

ConfidentialityNone
IntegrityNone
AvailabilityHigh

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓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

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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-770: : Allocation of Resources Without Limits or Throttling

CVSS vector

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

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Gitlab	Gitlab	≥ 11.8.0 and < 19.0.5
Gitlab	Gitlab	≥ 11.8.0 and < 19.0.5
Gitlab	Gitlab	≥ 19.1.0 and < 19.1.3
Gitlab	Gitlab	≥ 19.1.0 and < 19.1.3
Gitlab	Gitlab	19.2.0
Gitlab	Gitlab	19.2.0

All CVSS metrics

HIGH 7.5 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
HIGH 7.5 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Advisories

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/ Release NotesVendor AdvisoryCVE record · GitLab · Updated 2026-07-29T18:59:56.043Z
NVD · CVE-2026-15975 · Updated 2026-08-03T14:28:00.947
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-50476 ADVISORYEUVD · EUVD-2026-50476

Technical & other

https://gitlab.com/gitlab-org/gitlab/-/work_items/601420 Broken LinkCVE record · GitLab · Updated 2026-07-29T18:59:56.043Z
NVD · CVE-2026-15975 · Updated 2026-08-03T14:28:00.947

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