| Package | Affected versions | Patched versions |
|---|---|---|
| php | ≥ 8.2.0, < 8.2.21≥ 8.3.0, < 8.3.31≥ 8.4.0, < 8.4.21≥ 8.5.0, < 8.5.6 | 8.2.218.3.318.4.218.5.6 |
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.
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