{"id":"CVE-2012-5788","aliases":["EUVD-2012-5668","GHSA-4f82-64j5-842v"],"status":"published","title":"The PayPal IPN utility does not verify that the server hostname matches a domain name in the...","description":"The PayPal IPN utility does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to use of the PHP fsockopen function.","severity":{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.0057,"percentile":0.47394,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2012-11-04T22:00:00Z","modified":"2026-06-16T23:47:20Z","products":[{"vendor":"paypal","product":"ipn"}],"references":[{"url":"http://www.cs.utexas.edu/~shmat/shmat_ccs12.pdf","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/79982","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-5788"},{"url":"https://github.com/advisories/GHSA-4f82-64j5-842v"}],"sources":{"cve":[{"id":"CVE-2012-5788","description":"The PayPal IPN utility does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to use of the PHP fsockopen function.","status":"published","published":"2012-11-04T22:00:00Z","modified":"2024-08-06T21:14:16.394Z","updated_at":"2026-11-02T14:34:49.600255Z"}],"euvd":[{"id":"EUVD-2012-5668","description":"The PayPal IPN utility does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to use of the PHP fsockopen function.","status":"published","published":"2012-11-04T22:00:00Z","modified":"2024-08-06T21:14:16Z","updated_at":"2026-11-03T01:56:04.024018Z"}],"ghsa":[{"id":"GHSA-4f82-64j5-842v","title":"The PayPal IPN utility does not verify that the server hostname matches a domain name in the...","description":"The PayPal IPN utility does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to use of the PHP fsockopen function.","status":"published","published":"2022-05-17T01:38:56Z","modified":"2023-02-03T05:04:44Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:37.258179Z"}],"nvd":[{"id":"CVE-2012-5788","description":"The PayPal IPN utility does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to use of the PHP fsockopen function.","status":"published","published":"2012-11-04T22:55:03.53Z","modified":"2026-06-16T23:47:20.42Z","cvss":[{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:16.536025Z"}]}}