FKIE_CVE-2026-46491

Vulnerability from fkie_nvd - Published: 2026-06-10 00:16 - Updated: 2026-07-23 09:10
Severity
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Summary
SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controlled ticket identifier. Public CAS validation/proxy endpoints pass attacker-controlled ticket / pgt query parameters into this store. In deployments using FileSystemTicketStore, a remote attacker can use path traversal sequences such as ../target.serialized to make the CAS server read and unserialize files outside the ticket directory. In the CAS 1.0 validation flow, the same attacker-selected path is also passed to deleteTicket() immediately after getTicket() returns, which can delete the target file when it is readable by the PHP process, deletable under the PHP process filesystem permissions, and unserializes to a value compatible with the ?array return type. This issue has been patched in version 7.0.3.
References
security-advisories@github.comhttps://github.com/simplesamlphp/simplesamlphp-module-casserver/commit/b84f3e4ed57c4d97e0dc73df102e7eff831a681f
security-advisories@github.comhttps://github.com/simplesamlphp/simplesamlphp-module-casserver/releases/tag/v7.0.3
security-advisories@github.comhttps://github.com/simplesamlphp/simplesamlphp-module-casserver/security/advisories/GHSA-jrrg-99xh-5j2q
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "simplesamlphp-module-casserver",
          "vendor": "simplesamlphp",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.0.3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controlled ticket identifier. Public CAS validation/proxy endpoints pass attacker-controlled ticket / pgt query parameters into this store. In deployments using FileSystemTicketStore, a remote attacker can use path traversal sequences such as ../target.serialized to make the CAS server read and unserialize files outside the ticket directory. In the CAS 1.0 validation flow, the same attacker-selected path is also passed to deleteTicket() immediately after getTicket() returns, which can delete the target file when it is readable by the PHP process, deletable under the PHP process filesystem permissions, and unserializes to a value compatible with the ?array return type. This issue has been patched in version 7.0.3."
    },
    {
      "lang": "es",
      "value": "SimpleSAMLphp-casserver es un servidor CAS compatible con CAS 1.0 y 2.0 en forma de m\u00f3dulo SimpleSAMLphp. Antes de la versi\u00f3n 7.0.3, simplesamlphp-module-casserver construye rutas de archivo para el almac\u00e9n de tickets CAS basado en archivos concatenando directamente el directorio de tickets configurado con un identificador de ticket controlado por el atacante. Los puntos finales p\u00fablicos de validaci\u00f3n/proxy de CAS pasan par\u00e1metros de consulta de ticket / pgt controlados por el atacante a este almac\u00e9n. En implementaciones que utilizan FileSystemTicketStore, un atacante remoto puede usar secuencias de salto de ruta como ../target.serialized para hacer que el servidor CAS lea y deserialice archivos fuera del directorio de tickets. En el flujo de validaci\u00f3n de CAS 1.0, la misma ruta seleccionada por el atacante tambi\u00e9n se pasa a deleteTicket() inmediatamente despu\u00e9s de que getTicket() retorna, lo que puede eliminar el archivo objetivo cuando es legible por el proceso PHP, eliminable bajo los permisos del sistema de archivos del proceso PHP, y se deserializa a un valor compatible con el tipo de retorno ?array. Este problema ha sido parcheado en la versi\u00f3n 7.0.3."
    }
  ],
  "id": "CVE-2026-46491",
  "lastModified": "2026-07-23T09:10:00.113",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-46491",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-10T18:11:18.465035Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-10T00:16:53.690",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/simplesamlphp/simplesamlphp-module-casserver/commit/b84f3e4ed57c4d97e0dc73df102e7eff831a681f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/simplesamlphp/simplesamlphp-module-casserver/releases/tag/v7.0.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/simplesamlphp/simplesamlphp-module-casserver/security/advisories/GHSA-jrrg-99xh-5j2q"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.