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CVE-2008-1026

Status: ModifiedMedium (6.8)—

Integer overflow in the PCRE regular expression compiler (JavaScriptCore/pcre/pcre_compile.cpp) in Apple WebKit, as used in Safari before 3.1.1, allows remote attackers to execute arbitrary code via a regular expression with large, nested repetition counts, which triggers a heap-based buffer overflow.

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)

Apple — Safari

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2008-1026",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
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        "obtainAllPrivilege": false,
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  "published": "2008-04-17T19:05:00.000",
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      "value": "Integer overflow in the PCRE regular expression compiler (JavaScriptCore/pcre/pcre_compile.cpp) in Apple WebKit, as used in Safari before 3.1.1, allows remote attackers to execute arbitrary code via a regular expression with large, nested repetition counts, which triggers a heap-based buffer overflow."
    },
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      "value": "Desbordamiento de entero en el compilador de expresiones regulares PCRE (JavaScriptCore/pcre/pcre_compile.cpp) en Apple WebKit, como se utiliza en Safari en versiones anteriores a 3.1.1, permite a atacantes remotos ejecutar código arbitrario a través de expresiones regulares con grandes conteos de repetición anidados, lo que desencadena un desbordamiento de búfer basado en memoria dinámica."
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  ],
  "lastModified": "2026-06-16T22:50:50.047",
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  "vendorComments": [
    {
      "comment": "Not vulnerable. This issue did not affect versions of pcre as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.",
      "lastModified": "2008-04-24T00:00:00",
      "organization": "Red Hat"
    }
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}