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CVE-2010-2950

Status: ModifiedMedium (6.8)—
Severity6.8Medium · CVSS 2.0
Exploitation probability5.69 %higher than 93% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Format string vulnerability in stream.c in the phar extension in PHP 5.3.x through 5.3.3 allows context-dependent attackers to obtain sensitive information (memory contents) and possibly execute arbitrary code via a crafted phar:// URI that is not properly handled by the phar_stream_flush function, leading to errors in the php_stream_wrapper_log_error function. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-2094.

CVSS

Base score
6.8
Version
2.0
Vector
AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
5.69 %
Percentile among all scored CVEs
93
Score date
10/23/2026

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)

PHP — PHP

CWEs

References

Show 24 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2010-2950",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "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"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2010-09-28T18:00:02.730",
  "references": [
    {
      "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html",
      "tags": [
        "Exploit"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=130331363227777&w=2",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://php-security.org/2010/05/14/mops-2010-024-php-phar_stream_flush-format-string-vulnerability/index.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://security-tracker.debian.org/tracker/CVE-2010-2950",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://support.apple.com/kb/HT4581",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://svn.php.net/viewvc?view=revision&revision=302565",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:254",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.php.net/archive/2010.php#id2010-12-10-1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.php.net/releases/5_3_4.php",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=598537",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=130331363227777&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://php-security.org/2010/05/14/mops-2010-024-php-phar_stream_flush-format-string-vulnerability/index.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security-tracker.debian.org/tracker/CVE-2010-2950",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://support.apple.com/kb/HT4581",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://svn.php.net/viewvc?view=revision&revision=302565",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:254",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/archive/2010.php#id2010-12-10-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/releases/5_3_4.php",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=598537",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-134"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Format string vulnerability in stream.c in the phar extension in PHP 5.3.x through 5.3.3 allows context-dependent attackers to obtain sensitive information (memory contents) and possibly execute arbitrary code via a crafted phar:// URI that is not properly handled by the phar_stream_flush function, leading to errors in the php_stream_wrapper_log_error function.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-2094."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de formato de cadena en stream.c en la extensión phar en PHP v5.3.x hasta v5.3.3 permite a atacantes dependientes del contexto obtener información sensible (contenidos de memoria) y probablemente ejecutar código de su elección a través de URI phar:// manipuladas que no manejan adecuadamente por la función har_stream_flush, dando lugar a errores en la función php_stream_wrapper_log_error. NOTA: Esta vulnerabilidad existe por una solución incompleta para CVE-2010-2094.\r\n"
    }
  ],
  "lastModified": "2026-06-16T23:21:49.197",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:5.3.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9EF4B938-BB14-4C06-BEE9-10CA755C5DEF"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.3.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "981C922C-7A7D-473E-8C43-03AB62FB5B8B"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.3.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5D0CD11A-09C2-4C60-8F0C-68E55BD6EE63"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.3.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B0F40E4A-E125-4099-A8B3-D42614AA9312"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}