{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "valkey",
          "vendor": "valkey-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 9.0.0, \u003c 9.0.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Valkey is a distributed key-value database. Starting in version 9.0.0 and prior to version 9.0.3, a malicious actor with network access to Valkey can cause the system to abort by triggering an assertion. When processing incoming requests, the Valkey system does not properly reset the networking state after processing an empty request. A malicious actor can then send a request that the server incorrectly identifies as breaking server side invariants, which results in the server shutting down. Version 9.0.3 fixes the issue. As an additional mitigation, properly isolate Valkey deployments so that only trusted users have access."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-23T19:43:45.736Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/valkey-io/valkey/security/advisories/GHSA-93p9-5vc7-8wgr",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/valkey-io/valkey/security/advisories/GHSA-93p9-5vc7-8wgr"
        }
      ],
      "source": {
        "advisory": "GHSA-93p9-5vc7-8wgr",
        "discovery": "UNKNOWN"
      },
      "title": "Valkey has Pre-Authentication DOS from malformed RESP request"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-27623",
    "datePublished": "2026-02-23T19:43:45.736Z",
    "dateReserved": "2026-02-20T22:02:30.027Z",
    "dateUpdated": "2026-02-23T19:43:45.736Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-27623\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-23T20:28:55.217\",\"lastModified\":\"2026-02-24T14:13:49.320\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Valkey is a distributed key-value database. Starting in version 9.0.0 and prior to version 9.0.3, a malicious actor with network access to Valkey can cause the system to abort by triggering an assertion. When processing incoming requests, the Valkey system does not properly reset the networking state after processing an empty request. A malicious actor can then send a request that the server incorrectly identifies as breaking server side invariants, which results in the server shutting down. Version 9.0.3 fixes the issue. As an additional mitigation, properly isolate Valkey deployments so that only trusted users have access.\"},{\"lang\":\"es\",\"value\":\"Valkey es una base de datos distribuida de clave-valor. A partir de la versi\u00f3n 9.0.0 y antes de la versi\u00f3n 9.0.3, un actor malintencionado con acceso de red a Valkey puede provocar que el sistema aborte al activar una aserci\u00f3n. Al procesar las solicitudes entrantes, el sistema Valkey no restablece correctamente el estado de la red despu\u00e9s de procesar una solicitud vac\u00eda. Un actor malintencionado puede entonces enviar una solicitud que el servidor identifica incorrectamente como una ruptura de las invariantes del lado del servidor, lo que resulta en el apagado del servidor. La versi\u00f3n 9.0.3 corrige el problema. Como una mitigaci\u00f3n adicional, a\u00edsle adecuadamente las implementaciones de Valkey para que solo los usuarios de confianza tengan acceso.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"references\":[{\"url\":\"https://github.com/valkey-io/valkey/security/advisories/GHSA-93p9-5vc7-8wgr\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}