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6.3 Medium

CVE-2026-7258 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,…

Description

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.

Affected products and versions

Product Affected versions Fixed in
PHP 8.5 earliest → < 8.5.6 8.5.6
PHP 8.4 earliest → < 8.4.21 8.4.21
PHP 8.3 earliest → < 8.3.31 8.3.31
PHP 8.2 earliest → < 8.2.31 8.2.31

References

Timeline

  1. Published
  2. Last modified

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