FKIE_CVE-2021-39866
Vulnerability from fkie_nvd - Published: 2021-10-05 13:15 - Updated: 2026-06-17 04:04
Severity
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.4 (Medium) - CVSS:3.1/
Summary
A business logic error in the project deletion process in GitLab 13.6 and later allows persistent access via project access tokens.
References
{
"affected": [
{
"affectedData": [
{
"product": "GitLab",
"vendor": "GitLab",
"versions": [
{
"status": "affected",
"version": "\u003e=14.3, \u003c14.3.1"
},
{
"status": "affected",
"version": "\u003e=14.2, \u003c14.2.5"
},
{
"status": "affected",
"version": "\u003e=13.6, \u003c14.1.7"
}
]
}
],
"source": "cve@gitlab.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"matchCriteriaId": "0712F301-9E84-4F2D-A437-8F3C31AB36B2",
"versionEndExcluding": "14.1.7",
"versionStartIncluding": "13.6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "70611DD5-5353-49DB-A9AF-E2869AE9A7CC",
"versionEndExcluding": "14.1.7",
"versionStartIncluding": "13.6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"matchCriteriaId": "CAB23F69-59A2-430F-A082-A5F81A7A464C",
"versionEndExcluding": "14.2.5",
"versionStartIncluding": "14.2.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "CD7E2FAA-308F-450F-8990-52A7DEB8ED00",
"versionEndExcluding": "14.2.5",
"versionStartIncluding": "14.2.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:4.3.0:*:*:*:community:*:*:*",
"matchCriteriaId": "43C7D46F-A414-4818-B74C-547684E7B01D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:gitlab:gitlab:4.3.0:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "35B8762D-58EF-4F52-9C12-6CA842F2E195",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A business logic error in the project deletion process in GitLab 13.6 and later allows persistent access via project access tokens."
},
{
"lang": "es",
"value": "Un error de l\u00f3gica de negocio en el proceso de eliminaci\u00f3n de proyectos en GitLab versiones 13.6 y posteriores, permite el acceso persistente por medio de tokens de acceso al proyecto"
}
],
"id": "CVE-2021-39866",
"lastModified": "2026-06-17T04:04:19.590",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 2.5,
"source": "cve@gitlab.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 2.5,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-10-05T13:15:07.920",
"references": [
{
"source": "cve@gitlab.com",
"tags": [
"Vendor Advisory"
],
"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39866.json"
},
{
"source": "cve@gitlab.com",
"tags": [
"Broken Link"
],
"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/333175"
},
{
"source": "cve@gitlab.com",
"tags": [
"Permissions Required"
],
"url": "https://hackerone.com/reports/1199561"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39866.json"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Broken Link"
],
"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/333175"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Permissions Required"
],
"url": "https://hackerone.com/reports/1199561"
}
],
"sourceIdentifier": "cve@gitlab.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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