CVE-2026-7258

描述

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, some functions, including urldecode(), pass signed char to ctype functions (like isxdigit()). On the systems with default signed char and optimized table-lookup ctype functions - such as NetBSD - this can lead to accessing array with negative offset, which can trigger a denial of service.

如何修補 CVE-2026-7258

要修補 CVE-2026-7258,請將受影響套件升級到下列已修補版本。

• Bitnami/libphp—升級至 8.2.31 或更新版本
• —升級至 8.2.31 或更新版本
• —升級至 8.2.31 或更新版本

CVE-2026-7258 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(3)

• >= 8.2.0, < 8.2.31, >= 8.3.0, < 8.3.31, >= 8.4.0, < 8.4.21, >= 8.5.0, < 8.5.6
• >= 8.2.0, < 8.2.31, >= 8.3.0, < 8.3.31, >= 8.4.0, < 8.4.21, >= 8.5.0, < 8.5.6
• >= 8.2.0, < 8.2.31, >= 8.3.0, < 8.3.31, >= 8.4.0, < 8.4.21, >= 8.5.0, < 8.5.6

CVSS 分數

參考連結(2)

• WEBgithub.com/php/php-src/security/advisories/GHSA-m8rr-4c36-8gq4
• WEBnvd.nist.gov/vuln/detail/CVE-2026-7258