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Description

An issue has been discovered in GitLab CE/EE affecting all versions from 11.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an authenticated user to cause denial of service by exploiting a Bitbucket Server import endpoint via repeatedly sending large responses.

PUBLISHED Reserved 2026-02-20 | Published 2026-02-25 | Updated 2026-02-26 | Assigner GitLab




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

Default status
unaffected

11.2 (semver) before 18.7.5
affected

18.8 (semver) before 18.8.5
affected

18.9 (semver) before 18.9.1
affected

Credits

This vulnerability has been discovered internally by GitLab team member [Sam Word](https://gitlab.com/SamWord) finder

References

gitlab.com/gitlab-org/gitlab/-/work_items/570554

about.gitlab.com/...25/patch-release-gitlab-18-9-1-released/

cve.org (CVE-2026-2845)

nvd.nist.gov (CVE-2026-2845)

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