CVE-2026-54697
ConnectBot SSH: Excessive allocation and integer overflow in DER private-key parsing
ConnectBot SSH Client Library is written in Kotlin with Kaitai Struct and KStateMachine. Prior to 0.3.1, DerReader.readLength() accepts excessive long-form DER length octets, accumulates them into an Int, and primitive readers allocate arrays without checking the declared size against the remaining input. An application or user that loads an attacker-provided private-key file through SshClient.authenticatePublicKey(), SshKeys.decodePemPrivateKey(), SshSigning.sign(), or SshSigning.getPublicKey() can trigger integer wraparound, excessive allocation, or an uncaught OutOfMemoryError. SSH server host keys and agent-forwarding messages do not use this application-supplied private-key input path. No usable weakened key and no confidentiality or integrity impact have been demonstrated. This issue is fixed in version 0.3.1.
| CWE | CWE-190 CWE-789 |
| Vendor | connectbot |
| Product | cbssh |
| Published | Oct 13, 2026 |
| Last Updated | Oct 13, 2026 |
Get instant alerts for connectbot cbssh
Be the first to know when new unknown vulnerabilities affecting connectbot cbssh are published — delivered to Slack, Telegram or Discord.