NULL Pointer Dereference Affecting php package, versions [8.2.0 ,8.2.31)[8.3.0,8.3.31)[8.4.0,8.4.21)[8.5.0,8.5.6)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published10 May 2026
- disclosed10 May 2026
- creditvi3tL0u1s
Introduced: 10 May 2026
CVE-2026-7259 (opens in a new tab)How to fix?
Upgrade php to version 8.2.31, 8.3.31, 8.4.21, 8.5.6 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference in the php_mb_check_encoding process when user-controlled input influences the encoding passed to mb_regex_encoding. An attacker can cause a segmentation fault and application crash by supplying crafted input that triggers a mismatch between encoding lists, resulting in a null pointer dereference.