CVE-2026-3988: high-severity vulnerability in GitLab
Inefficient Algorithmic Complexity in GitLab
Published
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.9%
exploitation probability
0.9%top 43% of all CVEs
observed exploitation
nono source reports it
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
GitLab · GitLabRelated CVEs — GitLab
In the same product, most dangerous first.
CVE-2021-22205CRITICALCVE-2021-22205EPSS 99.7%KEVCVE-2023-7028CRITICALWeak Password Recovery Mechanism for Forgotten Password in GitLabEPSS 94.6%KEVCVE-2026-85706CRITICALImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLabEPSS 93.0%KEVCVE-2021-22175MEDIUMCVE-2021-22175EPSS 53.4%KEVCVE-2021-39935MEDIUMCVE-2021-39935EPSS 36.1%KEVCVE-2023-2442HIGHCVE-2023-2442EPSS 96.1%