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CVE-2026-54697 affects org.connectbot.sshlib:sshlib through version 0.3.0. The vulnerability is in DER private-key parsing logic used by key-handling APIs including SshClient.authenticatePublicKey(), SshKeys.decodePemPrivateKey(), SshSigning.sign(), and SshSigning.getPublicKey(). A malformed private key can supply invalid DER length fields that trigger integer wraparound during length accumulation or conversion, leading to incorrect size calculations, excessive memory allocation attempts, parsing failures, or an uncaught OutOfMemoryError. The issue is described as stemming from insufficient DER length validation and unsafe integer handling during parsing.
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