CVE-2023-3500 (GCVE-0-2023-3500)

Vulnerability from cvelistv5 – Published: 2023-08-02 00:07 – Updated: 2025-11-20 04:07
VLAI
Title
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Summary
An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.0 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A reflected XSS was possible when creating specific PlantUML diagrams that allowed the attacker to perform arbitrary actions on behalf of victims.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-24 14:25 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
URL Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/416902 issue-trackingpermissions-required
https://hackerone.com/reports/2010926 technical-descriptionexploitpermissions-required
Impacted products
Vendor Product Version CPE status
GitLab GitLab Affected: 10.0 , < 16.0.8 (semver)
Affected: 16.1 , < 16.1.3 (semver)
Affected: 16.2 , < 16.2.2 (semver)
    cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
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Show details on NVD website

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              "repo": "git://git@gitlab.com:gitlab-org/gitlab.git",
              "vendor": "GitLab",
              "versions": [
                {
                  "lessThan": "16.0.8",
                  "status": "affected",
                  "version": "10.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "16.1.3",
                  "status": "affected",
                  "version": "16.1",
                  "versionType": "semver"
                },
                {
                  "lessThan": "16.2.2",
                  "status": "affected",
                  "version": "16.2",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "Thanks [ankitsingh](https://hackerone.com/ankitsingh) for reporting this vulnerability through our HackerOne bug bounty program"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.0 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A reflected XSS was possible when creating specific PlantUML diagrams that allowed the attacker to perform arbitrary actions on behalf of victims."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.8,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-79",
                  "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-11-20T04:07:53.323Z",
            "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
            "shortName": "GitLab"
          },
          "references": [
            {
              "name": "GitLab Issue #416902",
              "tags": [
                "issue-tracking",
                "permissions-required"
              ],
              "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/416902"
            },
            {
              "name": "HackerOne Bug Bounty Report #2010926",
              "tags": [
                "technical-description",
                "exploit",
                "permissions-required"
              ],
              "url": "https://hackerone.com/reports/2010926"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "value": "Upgrade to versions 16.2.2, 16.1.3, 16.0.8 or above."
            }
          ],
          "title": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) in GitLab"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "assignerShortName": "GitLab",
        "cveId": "CVE-2023-3500",
        "datePublished": "2023-08-02T00:07:15.239Z",
        "dateReserved": "2023-07-04T09:22:12.252Z",
        "dateUpdated": "2025-11-20T04:07:53.323Z",
        "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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