fkie_cve-2025-12983
Vulnerability from fkie_nvd
Published
2025-11-15 09:15
Modified
2025-11-19 19:44
Severity ?
3.5 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns.
References
| URL | Tags | ||
|---|---|---|---|
| cve@gitlab.com | https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/ | Release Notes, Vendor Advisory | |
| cve@gitlab.com | https://gitlab.com/gitlab-org/gitlab/-/issues/296257 | Broken Link | |
| cve@gitlab.com | https://hackerone.com/reports/3419588 | Permissions Required |
Impacted products
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"matchCriteriaId": "B097C4A0-D3E7-4EE7-8533-30CE2CC51381",
"versionEndExcluding": "18.3.6",
"versionStartIncluding": "16.9.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "3073B463-3C6C-456E-8EC6-6E1CA4B3489C",
"versionEndExcluding": "18.3.6",
"versionStartIncluding": "16.9.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"matchCriteriaId": "36824F52-C9A0-4FB3-91F3-05593E3551E8",
"versionEndExcluding": "18.4.4",
"versionStartIncluding": "18.4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "6D0A238D-1278-4D05-86F5-4C323E0CFE36",
"versionEndExcluding": "18.4.4",
"versionStartIncluding": "18.4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"matchCriteriaId": "7E85D20B-EEE1-4CC9-B50A-4040972287D8",
"versionEndExcluding": "18.5.2",
"versionStartIncluding": "18.5.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "B2A3A57F-C750-4C92-8C2B-C5FCF1D70F4F",
"versionEndExcluding": "18.5.2",
"versionStartIncluding": "18.5.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns."
}
],
"id": "CVE-2025-12983",
"lastModified": "2025-11-19T19:44:25.580",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 3.5,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 1.4,
"source": "cve@gitlab.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-11-15T09:15:41.950",
"references": [
{
"source": "cve@gitlab.com",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/"
},
{
"source": "cve@gitlab.com",
"tags": [
"Broken Link"
],
"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/296257"
},
{
"source": "cve@gitlab.com",
"tags": [
"Permissions Required"
],
"url": "https://hackerone.com/reports/3419588"
}
],
"sourceIdentifier": "cve@gitlab.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-789"
}
],
"source": "cve@gitlab.com",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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