CVE-2026-91166Public exploitNetwork attack vectorHinoki check available

Target impersonation via misbound jump-host keys

Published Sep 21, 2026 · Updated Sep 21, 2026

Host-key verification bypass in Warptech Industries Warpgate 0.25.0 through 0.27.5 allows attackers to impersonate browser SSH targets. The WebSSH manager handles each unknown host key without its presenting hop identity and stores the jump host key under the final target address. Exploitation requires a permitted browser session with a jump host and control of that host's key plus the target path, enabling interception of traffic and certificate authentication.

CVSS severity5.7
Medium
EPSS probability0.22%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Host-key verification bypass in Warptech Industries Warpgate 0.25.0 through 0.27.5 allows attackers to impersonate browser SSH targets. The WebSSH manager handles each unknown host key without its presenting hop identity and stores the jump host key under the final target address. Exploitation requires a permitted browser session with a jump host and control of that host's key plus the target path, enabling interception of traffic and certificate authentication.

The record

CVE
CVE-2026-91166
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Warptech Industries
Product
Warpgate
Classifications
CWE-297, CWE-923, T1557
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.25.0, < 0.27.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Warptech Industries · Warpgateversion=>= 0.25.0, < 0.27.6

Published CVSS scores

5.7GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-297Improper Validation of Certificate with Host Mismatch
CWE-923Improper Restriction of Communication Channel to Intended Endpoints
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

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Your stack

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