CVE-2012-4388

MediumCVSS 4.3/10Last modified Jun 16, 2026

Description

The sapi_header_op function in main/SAPI.c in PHP 5.4.0RC2 through 5.4.0 does not properly determine a pointer during checks for %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a crafted URL, related to improper interaction between the PHP header function and certain browsers, as demonstrated by Internet Explorer and Google Chrome. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1398.

Metrics

CVSS 2.0 4.3/10AV:N/AC:M/Au:N/C:N/I:P/A:N

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published
Sep 7, 2012
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2012-4388: Medium severity, CVSS 4.3 | Vulnix