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CVE-2021-39894

Status: ModifiedMedium (5.4)—

In all versions of GitLab CE/EE since version 8.0, a DNS rebinding vulnerability exists in Fogbugz importer which may be used by attackers to exploit Server Side Request Forgery attacks.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Gitlab — Gitlab

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-39894",
  "cveTags": [],
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          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
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  "published": "2021-10-05T13:15:08.467",
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      "value": "In all versions of GitLab CE/EE since version 8.0, a DNS rebinding vulnerability exists in Fogbugz importer which may be used by attackers to exploit Server Side Request Forgery attacks."
    },
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      "lang": "es",
      "value": "En todas las versiones de GitLab CE/EE desde la versión 8.0, se presenta una vulnerabilidad de reenganche de DNS en el importador Fogbugz que puede ser usada por atacantes para explotar ataques de tipo Server Side Request Forgery"
    }
  ],
  "lastModified": "2026-06-17T04:04:22.673",
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