fix: Avoid following symlinks during recursive cleanups#1751
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A symlinked .run entry in a shared or pre-existing database directory could pass the stat-based directory checks used by old-run processing. That allowed cleanup to traverse attacker-controlled symlink targets and delete files outside the SDK cache. Detect symlinks explicitly and avoid recursing through them during cleanup, so old run processing removes only real cache directories and never follows a planted .run symlink. Co-Authored-By: OpenAI Codex <noreply@openai.com>
jpnurmi
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mujacica
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May 27, 2026
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A symlinked .run entry in a shared or pre-existing database directory could pass the stat-based directory checks used by old-run processing. That allowed cleanup to traverse attacker-controlled symlink targets and delete files outside the SDK cache.
Detect symlinks explicitly and avoid recursing through them during cleanup, so old run processing removes only real cache directories and never follows a planted .run symlink.