MediumVulnerabilityLLM-specific

CVE-2026-44467: Claude Desktop SSH remote development accepts unverified host keys

Source: NVD(opens in a new tab)
Identifier: CVE-2026-44467
Published: May 13, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.2%

Summary

CVE-2026-44467 affects Claude Desktop from 1.2581.0 to before 1.4304.0. Its SSH remote development feature checked only whether a hostname existed in ~/.ssh/known_hosts and did not compare the server's presented host key against the stored key. A network-positioned attacker could present an arbitrary host key, which was silently accepted, enabling a man-in-the-middle attack on remote development sessions. Exploitation required interception of SSH traffic and an existing known_hosts entry for the target hostname.

Mitigation

Fixed in 1.4304.0.

Details

Scores and exploitation

EPSS: 0.2%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 12, 2026.
Disclosure date: May 13, 2026

Weaknesses and techniques

Weakness (CWE): CWE-297
CWE-322

Affected

Vendors: Anthropic

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: API
Impact: Confidentiality,
Integrity
Labels: security,
industry

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-44467

First tracked: May 13, 2026 at 08:10 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Summary

Mitigation

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