CVE-2021-43823

{
  "id": "CVE-2021-43823",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "sourcegraph",
          "product": "sourcegraph",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.33.2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-12-13T20:15:07.813",
  "references": [
    {
      "url": "https://github.com/sourcegraph/sourcegraph/commit/a88d90a8302c492282186d39718cd8fb093c14fa",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sourcegraph/sourcegraph/security/advisories/GHSA-cpq7-hmvv-29w9",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sourcegraph/sourcegraph/commit/a88d90a8302c492282186d39718cd8fb093c14fa",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/sourcegraph/sourcegraph/security/advisories/GHSA-cpq7-hmvv-29w9",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Sourcegraph is a code search and navigation engine. Sourcegraph prior to version 3.33.2 is vulnerable to a side-channel attack where strings in private source code could be guessed by an authenticated but unauthorized actor. This issue affects the Saved Searches and Code Monitoring features. A successful attack would require an authenticated bad actor to create many Saved Searches or Code Monitors to receive confirmation that a specific string exists. This could allow an attacker to guess formatted tokens in source code, such as API keys. This issue was patched in version 3.33.2 and any future versions of Sourcegraph. We strongly encourage upgrading to secure versions. If you are unable to, you may disable Saved Searches and Code Monitors."
    },
    {
      "lang": "es",
      "value": "Sourcegraph es un motor de búsqueda y navegación de código. Sourcegraph versiones anteriores a 3.33.2 es vulnerable a un ataque de canal lateral en el que las cadenas del código fuente privado podrían ser adivinadas por un actor autenticado pero no autorizado. Este problema afecta a las funciones de Búsquedas Guardadas y Monitorización de Código. Un ataque con éxito requeriría que un actor malo autenticado creara muchas Búsquedas Guardadas o Monitores de Código para recibir la confirmación de que una cadena específica esta presente. Esto podría permitir a un atacante adivinar los tokens formateados en el código fuente, como las claves de la API. Este problema ha sido parcheado en la versión 3.33.2 y en las futuras versiones de Sourcegraph. Recomendamos encarecidamente que se actualice a las versiones seguras. Si no puede hacerlo, puede deshabilitar las Búsquedas Guardadas y los Monitores de Código"
    }
  ],
  "lastModified": "2026-06-17T04:11:30.877",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sourcegraph:sourcegraph:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8AC67147-DAE3-4326-9027-0DEB53C55D32",
              "versionEndExcluding": "3.33.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}