Switch to generating UUID4 components with wp_rand()

[johnbillion]

Trac ticket: Core-59239

[github-actions]

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[github-actions]

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[mukeshpanchal27]

Have you verified the bitwise operations (| 0x4000, | 0x8000)?

[mukeshpanchal27]

Shell we add the @since 7.0.0 Replacing mt_rand() with wp_rand().

[Copilot]

Pull request overview

This pull request improves the security of UUID4 generation in WordPress by replacing the non-cryptographically secure mt_rand() function with wp_rand(), which uses a cryptographically secure pseudo-random number generator (CSPRNG) when available.

Changes:

• Replaced all 8 calls to mt_rand() with wp_rand() in the wp_generate_uuid4() function

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