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CVE-2026-50549 is a critical vulnerability in Cursor versions prior to 3.0 that affects the agent write path used by the IDE’s AI-assisted workflow. Before performing a write, Cursor canonicalizes the requested target path to verify that the resolved destination remains داخل the workspace boundary. If canonicalization fails, however, the implementation falls back to the original unresolved path and proceeds with the write without requiring approval. An attacker controlling agent input can exploit this by creating a symlink inside the workspace that points to a location outside the workspace and then forcing canonicalization to fail, such as by targeting a non-existent destination or removing read permission from part of the path. Because the fallback trusts the in-workspace symlink path rather than the real resolved destination, Cursor can be induced to write arbitrary files outside the workspace under the user’s privileges. This flaw enables sandbox escape and can be chained into operating-system-level remote code execution by modifying components used to enforce Cursor’s sandbox so that subsequent commands execute unsandboxed. The issue is fixed in Cursor 3.0.
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32 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Cursor vulnerability, part of the DuneSlide disclosures, that allowed sandbox escape and OS-level remote code execution via prompt injection.
A symlink-handling vulnerability in Cursor that can mislead users during approval and cause writes to the resolved destination outside the workspace.
A symlink-handling vulnerability in Cursor that can allow file writes outside its sandbox/workspace while misleading the user by showing only the decoy filename rather than the resolved symlink target.
A symlink-based approval-bypass flaw in multiple AI coding assistants that can cause approval dialogs to misrepresent the real file being modified, enabling writes to sensitive files and potentially remote code execution.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.