PECL in the download utility class in the Installer in PEAR Base System v1.10.1 does not validate file types and filenames after a redirect, which allows remote HTTP servers to overwrite files via crafted responses, as demonstrated by a .htaccess overwrite.
Add your gear to cvedb and we'll alert you only when php ships something exploited.
Check my exposure →This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.