CVE-2025-14178

In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, a heap buffer overflow occurs in array_merge() when the total element count of packed arrays exceeds 32-bit limits or HT_MAX_SIZE, due to an integer overflow in the precomputation of element counts using zend_hash_num_elements(). This may lead to memory corruption or crashes and affect the integrity and availability of the target server.

Score
CVSS 3.1 8.2 High
Status
Modified - security@php.net
Published
2025-12-27
Last modified
2026-10-13
Weaknesses
CWE-190, CWE-787

Affected products

References

 
 
© AVABIS GmbH privacypolicy about