CVE-2025-14178 (GCVE-0-2025-14178)
Vulnerability from cvelistv5
Published
2025-12-27 19:27
Modified
2025-12-29 16:01
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE
  • CWE-787 - Out-of-bounds Write
  • CWE-190 - Integer Overflow or Wraparound
Summary
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.
References
Impacted products
Vendor Product Version
PHP Group PHP Version: 8.1.*   ≤
Version: 8.2.*   ≤
Version: 8.3.*   ≤
Version: 8.4.*   ≤
Version: 8.5.*   ≤
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