Deserialization of Untrusted Data in GitLab_CVE-2026-1184

6.5 / 10

MEDIUM

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

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by uploading a specially crafted file due to improper validation.

Basic Information

ID CVE-2026-1184

Source GitLab

Published May 14, 2026 at 05:37

Affected Product

Vendor GitLab

Product GitLab

Version 11.9

Affected Versions GitLab GitLab 11.9
GitLab GitLab 18.10
GitLab GitLab 18.11

CWE Classification

CWE-502

References

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    "lastseen": "",
    "description": "GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by uploading a specially crafted file due to improper validation.",
    "published": "2026-05-14T05:37:02.391Z",
    "modified": "2026-05-14T05:37:02.391Z",
    "type": "cve",
    "title": "Deserialization of Untrusted Data in GitLab",
    "source": "GitLab",
    "references": "https://hackerone.com/reports/3515842\nhttps://gitlab.com/gitlab-org/gitlab/-/work_items/586634\nhttps://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/",
    "id": "CVE-2026-1184",
    "bulletinFamily": "",
    "cwe": [
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    "cvelist": null,
    "sourceData": "GitLab GitLab 11.9\nGitLab GitLab 18.10\nGitLab GitLab 18.11",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseSeverity": "",
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "GitLab",
    "version": "11.9",
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    "ai_description": "",
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