Vulnerability Report

CVE-2026-14355

Title: PHP OpenSSL extension AES-WRAP-PAD buffer allocation flaw

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2026-14355.

CWE Category CWE-122

Published Date Jul 03, 2026

Modified Date Jul 08, 2026

Exploit Status Not Found

Score 5.6 CVSS v3.1

Exploit Probability (EPSS)

0.28%

Vulnerability Summary

CVE-2026-14355: In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the plaintext length without accounting for RFC 5649 expansion. This may cause OpenSSL to write beyond allocated memory, corrupting heap metadata and triggering application abort.

Impacted Vendors

php 1

php_group 1

Reference Links

https://github.com/php/php-src/security/advisories/GHSA-7jrw-539f-x6vr

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.6

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L