CVE-2023-52892

Estado: AnalizadaAlta (7.5)—

En phpseclib anterior a 1.0.22, 2.x anterior a 2.0.46 y 3.x anterior a 3.0.33, se permite incorrectamente que algunos caracteres en los campos Nombre alternativo del sujeto en los certificados TLS tengan un significado especial en expresiones regulares (como + comodín), lo que genera confusión de nombres en la verificación del host de certificados X.509.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.38%
Percentil entre todas las CVEs puntuadas: 30
Fecha de la puntuación: 11/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Phpseclib — Phpseclib

CWE

CWE-436

Referencias

JSON original (NVD)

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          "role": "CISA Coordinator",
          "options": [
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2024-08-21T19:54:11.710267Z"
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
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  "published": "2024-06-27T22:15:10.277",
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  "vulnStatus": "Analyzed",
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      "description": [
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      "lang": "en",
      "value": "In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification."
    },
    {
      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T06:43:52.450",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
          "cpeMatch": [
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}