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  4. CVE 2026 54697 connectbot ssh excessive allocation and integer
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Back to active CVEs
Medium · CVSS 6.7CVE-2026-54697GHSA-VC8P-8PXG-RFWG

ConnectBot SSH: Excessive allocation and integer overflow in DER private-key parsingCVE-2026-54697

Answer in brief

CVE-2026-54697 records a Medium severity (CVSS 6.7) vulnerability in ConnectBot SSH: Excessive allocation and integer overflow in DER private-key parsing. The current sources do not mark it as known exploited. The current feed maps connectbot/cbssh (generic), org.connectbot.sshlib:sshlib (maven), org.connectbot.sshlib:sshlib (maven). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 13, 2026Updated Oct 13, 2026Source checked Oct 13, 2026First seen by HOL Jun 19, 2026Material review Oct 13, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.7
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 6.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps connectbot/cbssh (generic), org.connectbot.sshlib:sshlib (maven), org.connectbot.sshlib:sshlib (maven). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
connectbot/cbsshgeneric<0.3.10.3.1
org.connectbot.sshlib:sshlibmaven<=0.3.0Not reported
org.connectbot.sshlib:sshlibmaven>=0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for connectbot/cbssh, org.connectbot.sshlib:sshlib, org.connectbot.sshlib:sshlib.
  2. 2Review the reported fix. Update connectbot/cbssh to 0.3.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 19, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Unbounded memory allocation in the Prometheus rule conversion APIAlso CWE-789
  • JumpServer: Ansible Automation Template Rendering Allows Unsafe Lookup Plugin InvocationSame generic ecosystem
  • dataclasses-avroschema allows code injection through fixed-type aliases supplied as a bare stringSame generic ecosystem
  • dataclasses-avroschema enum field defaults can inject statements into generated modulesSame generic ecosystem
  • GPAC AIT Parser ait.c gf_m2ts_decode_ait out-of-bounds writeSame generic ecosystem
  • libsndfile WAV Parsing wavlike.c wavlike_subchunk_parse uninitialized variableSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-190, CWE-789
Source
CVE List V5
Source checked
Oct 13, 2026
References
5 linked sources
Open source record