FKIE_CVE-2026-25479

Vulnerability from fkie_nvd - Published: 2026-02-09 20:15 - Updated: 2026-06-17 10:24
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0.
References
security-advisories@github.comhttps://docs.litestar.dev/2/release-notes/changelog.html#2.20.0Release Notes
security-advisories@github.comhttps://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4acePatch
security-advisories@github.comhttps://github.com/litestar-org/litestar/releases/tag/v2.20.0Release Notes
security-advisories@github.comhttps://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4Exploit, Vendor Advisory
Impacted products
Vendor Product Version
litestar litestar *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "litestar",
          "vendor": "litestar-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.20.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:litestar:litestar:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "67E26161-0CDE-4B8F-A065-04A19BC4CDCB",
              "versionEndExcluding": "2.20.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0."
    },
    {
      "lang": "es",
      "value": "Litestar es un framework de Interfaz de Pasarela de Servidor As\u00edncrono (ASGI). Antes de la 2.20.0, en litestar.middleware.allowed_hosts, las entradas de la lista de permitidos se compilan en patrones de expresiones regulares de una manera que permite que los metacaracteres de expresiones regulares conserven un significado especial (por ejemplo, . coincide con cualquier car\u00e1cter). Esto permite una omisi\u00f3n donde un atacante proporciona un host que coincide con la expresi\u00f3n regular pero no es el nombre de host literal previsto. Esta vulnerabilidad se corrige en la 2.20.0."
    }
  ],
  "id": "CVE-2026-25479",
  "lastModified": "2026-06-17T10:24:42.333",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-25479",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-10T15:39:53.590127Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-09T20:15:57.177",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/litestar-org/litestar/releases/tag/v2.20.0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-185"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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