CVE-2023-5356 (GCVE-0-2023-5356)

Vulnerability from cvelistv5 – Published: 2024-01-12 13:56 – Updated: 2026-04-28 04:05
VLAI
Title
Incorrect Authorization in GitLab
Summary
Incorrect authorization checks in GitLab CE/EE from all versions starting from 8.13 before 16.5.6, all versions starting from 16.6 before 16.6.4, all versions starting from 16.7 before 16.7.2, allows a user to abuse slack/mattermost integrations to execute slash commands as another user.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-01-23 21:57 UTC
CWE
  • CWE-863 - Incorrect Authorization
References
URL Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/427154 issue-trackingpermissions-required
https://hackerone.com/reports/2188868 technical-descriptionexploitpermissions-required
Impacted products
Vendor Product Version CPE status
GitLab GitLab Affected: 8.13 , < 16.5.6 (semver)
Affected: 16.6 , < 16.6.4 (semver)
Affected: 16.7 , < 16.7.2 (semver)
    cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
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Show details on NVD website

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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "cpes": [
                "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
              ],
              "defaultStatus": "unaffected",
              "product": "GitLab",
              "repo": "git://git@gitlab.com:gitlab-org/gitlab.git",
              "vendor": "GitLab",
              "versions": [
                {
                  "lessThan": "16.5.6",
                  "status": "affected",
                  "version": "8.13",
                  "versionType": "semver"
                },
                {
                  "lessThan": "16.6.4",
                  "status": "affected",
                  "version": "16.6",
                  "versionType": "semver"
                },
                {
                  "lessThan": "16.7.2",
                  "status": "affected",
                  "version": "16.7",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "Thanks [yvvdwf](https://hackerone.com/yvvdwf) for reporting this vulnerability through our HackerOne bug bounty program"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Incorrect authorization checks in GitLab CE/EE from all versions starting from 8.13 before 16.5.6, all versions starting from 16.6 before 16.6.4, all versions starting from 16.7 before 16.7.2, allows a user to abuse slack/mattermost integrations to execute slash commands as another user."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.3,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-863",
                  "description": "CWE-863: Incorrect Authorization",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-04-28T04:05:15.311Z",
            "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
            "shortName": "GitLab"
          },
          "references": [
            {
              "name": "GitLab Issue #427154",
              "tags": [
                "issue-tracking",
                "permissions-required"
              ],
              "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/427154"
            },
            {
              "name": "HackerOne Bug Bounty Report #2188868",
              "tags": [
                "technical-description",
                "exploit",
                "permissions-required"
              ],
              "url": "https://hackerone.com/reports/2188868"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "value": "Upgrade to versions 16.7.2, 16.6.4, 16.5.6 or above."
            }
          ],
          "title": "Incorrect Authorization in GitLab"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "assignerShortName": "GitLab",
        "cveId": "CVE-2023-5356",
        "datePublished": "2024-01-12T13:56:51.714Z",
        "dateReserved": "2023-10-03T12:30:32.774Z",
        "dateUpdated": "2026-04-28T04:05:15.311Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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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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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