CVE-2026-1388

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Source
https://cve.org/CVERecord?id=CVE-2026-1388
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1388.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-1388
Aliases
Downstream
Published
2026-02-25T20:05:05.289Z
Modified
2026-03-02T09:41:18.798243Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Inefficient Regular Expression Complexity in GitLab
Details

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause regular expression denial of service by sending specially crafted input to a merge request endpoint under certain conditions.

Database specific 
{
    "cwe_ids": [
        "CWE-1333"
    ],
    "cna_assigner": "GitLab",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1388.json"
}
References

Affected packages

Git / gitlab.com/gitlab-org/gitlab

Affected ranges

Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
4784d7896d755f282c6c629d236a4583ae45842b
Fixed
f70152f12046139e8d5b1652c185af8af63ebca3
Database specific 
{
    "versions": [
        {
            "introduced": "9.2"
        },
        {
            "fixed": "18.7.5"
        }
    ]
}
Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
1010a9b2b769993080ce8399fd25e77c54e1ad1c
Fixed
a28bcd8f433ae9da128464ded4f904d9a3bd89fe
Database specific 
{
    "versions": [
        {
            "introduced": "18.8"
        },
        {
            "fixed": "18.8.5"
        }
    ]
}
Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
20fe49b575fedd2b8cadc2c0640178879854aeb3
Fixed
91256b9c8dc94308d8be9557b4eb041933a7fffa
Database specific 
{
    "versions": [
        {
            "introduced": "18.9"
        },
        {
            "fixed": "18.9.1"
        }
    ]
}

Affected versions

Other
11-10-0cfa69752d8-0d9531c80-ee
11-10-0cfa69752d8-74ffd66ae-ee
11-10-119f9509d50-6d7537235-ee
v10.*
v10.1.0.pre
v10.2.0.pre
v10.3.0.pre
v10.4.0.pre
v10.5.0.pre
v10.6.0.pre
v10.7.0.pre
v10.8.0.pre
v10.9.0.pre
v11.*
v11.0.0.pre
v11.1.0.pre
v11.2.0.pre
v11.3.0.pre
v18.*
v18.7.0-ee
v18.7.0-rc42-ee
v18.7.0-rc43-ee
v18.7.1-ee
v18.7.2-ee
v18.7.3-ee
v18.7.4-ee
v18.8.0-ee
v18.8.1-ee
v18.8.2-ee
v18.8.3-ee
v18.8.4-ee
v18.9.0-ee
v6.*
v6.0.0-ee
v6.0.0-ee.beta
v6.0.0-ee.rc1
v6.1.0-ee
v6.2.1
v6.2.2
v6.3.0-ee
v6.3.1-ee
v6.4.0-ee
v6.4.1
v6.4.2
v6.4.3
v6.5.0-ee
v6.5.1
v6.6.0-ee
v6.6.1
v6.6.2
v6.7.0-ee
v6.7.0.rc1-ee
v6.7.1
v6.7.2
v6.8.0-ee
v6.8.1
v7.*
v7.0.0-ee
v7.1.0-ee
v7.1.0.rc1-ee
v7.2.0.rc1-ee
v7.2.0.rc2-ee
v7.2.0.rc3-ee
v7.2.0.rc4-ee
v7.2.0.rc5-ee
v7.3.0-ee
v7.3.0.rc1-ee
v7.4.0-ee
v7.4.1-ee
v7.4.2-ee
v7.4.3-ee
v7.4.4-ee
v8.*
v8.11.0
v8.11.0-ee
v8.11.0-rc1
v8.11.0-rc1-ee
v8.11.0-rc2
v8.11.0-rc2-ee
v8.11.0-rc3
v8.11.0-rc3-ee
v8.11.0-rc4
v8.11.0-rc4-ee
v8.11.0-rc5
v8.11.0-rc5-ee
v8.11.0-rc6
v8.11.0-rc6-ee
v8.11.0-rc7
v8.11.0-rc7-ee
v8.11.1
v8.12.0
v8.12.0-ee
v8.12.0-rc1
v8.12.0-rc1-ee
v8.12.0-rc2
v8.12.0-rc2-ee
v8.12.0-rc3
v8.12.0-rc3-ee
v8.12.0-rc4
v8.12.0-rc4-ee
v8.12.0-rc5
v8.12.0-rc5-ee
v8.12.0-rc6
v8.12.0-rc6-ee
v8.12.0-rc7
v8.12.0-rc7-ee
v8.12.0.pre
v8.12.1
v8.12.1-ee
v8.12.2
v8.12.2-ee
v8.12.3-ee
v8.2.0-ee
v8.2.0.rc1
v8.2.0.rc1-ee
v8.2.0.rc2
v8.2.0.rc2-ee
v8.8.0
v8.8.0-ee
v8.8.0-rc1
v8.8.0-rc1-ee
v8.8.0-rc2
v8.8.0-rc2-ee
v8.8.1-ee
v9.*
v9.2.0.pre
v9.3.0.pre
v9.5.0.pre
v9.6.0.pre

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1388.json"