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CVE-2026-54254 is an information exposure vulnerability in cyberdrop-dl-patched affecting handling of Pixeldrain URLs. When processing Pixeldrain links, the application could send an Authorization header containing the user's configured Pixeldrain API key to attacker-controlled lookalike domains because the URL validation logic relied on insufficient host matching rather than exact verification of an official Pixeldrain domain. As a result, a crafted URL that satisfied the crawler's substring-based domain logic could cause disclosure of the API credential to an external server under attacker control.
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