CVE-2011-1471: PHP

Medium severity, CVSS 4.3. EPSS: 13.2% chance of exploitation in the next 30 days.

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

Affected products

• PHP PHP: before 5.2.11 (fixed in 5.2.11); from 5.3.0, before 5.3.6 (fixed in 5.3.6)

Published 2011-03-20. Last modified 2026-06-16.