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CVE-2026-3988

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f41f8daca923288a61d0318e9066496951bf7f557ec24ac8396ecb915a44e0d7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","product":"GitLab","repo":"git://git@gitlab.com:gitlab-org/gitlab.git","vendor":"GitLab","versions":[{"lessThan":"18.8.7","status":"affected","version":"18.5","versionType":"semver"},{"lessThan":"18.9.3","status":"affected","version":"18.9","versionType":"semver"},{"lessThan":"18.10.1","status":"affected","version":"18.10","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:653a413dc61007a29e6a28045904bda455e60a2817828627ab1dc7b461cf5038 · sha256:abbef9fd1a79165e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:653a413dc61007a29e6a28045904bda455e60a2817828627ab1dc7b461cf5038 · sha256:abbef9fd1a79165e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-407","description":"CWE-407: Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:653a413dc61007a29e6a28045904bda455e60a2817828627ab1dc7b461cf5038 · sha256:abbef9fd1a79165e… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:653a413dc61007a29e6a28045904bda455e60a2817828627ab1dc7b461cf5038 · sha256:abbef9fd1a79165e… · /containers/cna/references/2
{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/593140"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:653a413dc61007a29e6a28045904bda455e60a2817828627ab1dc7b461cf5038 · sha256:abbef9fd1a79165e… · /containers/cna/references/0
{"name":"HackerOne Bug Bounty Report #3597342","tags":["technical-description","exploit","permissions-required"],"url":"https://hackerone.com/reports/3597342"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:653a413dc61007a29e6a28045904bda455e60a2817828627ab1dc7b461cf5038 · sha256:abbef9fd1a79165e… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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