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CVE-2008-4102

Status: ModifiedHigh (7.5)—

Joomla! 1.5 before 1.5.7 initializes PHP's PRNG with a weak seed, which makes it easier for attackers to guess the pseudo-random values produced by PHP's mt_rand function, as demonstrated by guessing password reset tokens, a different vulnerability than CVE-2008-3681.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Joomla — Joomla

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2008-4102",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": true,
        "userInteractionRequired": false
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  "affected": [
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          "versions": [
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  ],
  "published": "2008-09-18T17:59:32.907",
  "references": [
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      "url": "http://developer.joomla.org/security/news/272-20080902-core-random-number-generation-flaw.html",
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      "source": "cve@mitre.org"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.suspekt.org/2008/08/17/mt_srand-and-not-so-random-numbers/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-189"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Joomla! 1.5 before 1.5.7 initializes PHP's PRNG with a weak seed, which makes it easier for attackers to guess the pseudo-random values produced by PHP's mt_rand function, as demonstrated by guessing password reset tokens, a different vulnerability than CVE-2008-3681."
    },
    {
      "lang": "es",
      "value": "Joomla! 1.5 anterior a v1.5.7 inicializa el PHP's PRNG con una semilla débil, lo que facilita a los atacantes obtener valores pseudo-aleatorios originados por la función PHP's mt_rand, como se ha demostrado obteniendo un reinicio de contraseña. Vulnerabilidad distinta de CVE-2008-3681."
    }
  ],
  "lastModified": "2026-06-16T22:57:10.997",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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}