CVE-2026-91164

Description

Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. From 0.23.0 until 0.27.3, HTTP API token authentication resolves ConfigProvider::validate_api_token into RequestAuthorization::UserToken without enforcing the owning user's allowed_ip_ranges against the trusted client address in warpgate-protocol-http/src/common.rs. An attacker holding a leaked, phished, or exfiltrated X-Warpgate-Token can therefore use it from a prohibited network location. Deployments without allowed_ip_ranges are unaffected, and HTTP target proxying plus SSH, MySQL, PostgreSQL, RDP, VNC, and Kubernetes paths do not accept this vulnerable HTTP token flow. This issue is fixed in version 0.27.3.

Overview

State: PUBLISHED
Assigner (CNA): GitHub_M
CVSS severity: MEDIUM
CVSS score: 4.3 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Effective score: 4.3 / 10 MEDIUM source: CNA overview
CWE(s): CWE-284, CWE-863
Reserved: 2026-09-14
Published: 2026-09-21 18:50 UTC
Last updated: 2026-09-21 19:07 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/91xxx/CVE-2026-91164.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-21 19:17:14 UTC
NVD last modified: 2026-09-21 20:17:39 UTC
NVD CVSS v3.1: 4.3 / 10 MEDIUM source: security-advisories@github.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Exploitability subscore: 2.8 / 10
Impact subscore: 1.4 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-84062
Assigner: GitHub_M
Published: Sep 21, 2026, 6:50:40 PM
Updated: Sep 21, 2026, 7:07:48 PM
EUVD base score (CVSS 3.1): 4.3 / 10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EUVD-reported EPSS: 0.0000
Vendors: warp-tech
Products: warpgate (0.23.0, < 0.27.3)

ENISA description: Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. From 0.23.0 until 0.27.3, HTTP API token authentication resolves ConfigProvider::validate_api_token into RequestAuthorization::UserToken without enforcing the owning user's allowed_ip_ranges against the trusted client address in warpgate-protocol-http/src/common.rs. An attacker holding a leaked, phished, or exfiltrated X-Warpgate-Token can therefore use it from a prohibited network location. Deployments without allowed_ip_ranges are unaffected, and HTTP target proxying plus SSH, MySQL, PostgreSQL, RDP, VNC, and Kubernetes paths do not accept this vulnerable HTTP token flow. This issue is fixed in version 0.27.3.

EUVD references (4)

Affected products (1)

Vendor	Product	Versions	Platforms
warp-tech	warpgate	`>= 0.23.0, < 0.27.3` (affected)	—

Vendor references (4)

References embedded in the original CVE record by the assigning CNA.

https://github.com/warp-tech/warpgate/security/advisories/GHSA-qmr2-wp96-h9ff x_refsource_CONFIRM
https://github.com/warp-tech/warpgate/pull/2356 x_refsource_MISC
https://github.com/warp-tech/warpgate/commit/8cb33a1a7c447ab0cde3a1ee9f95bf9dde905482 x_refsource_MISC
https://github.com/warp-tech/warpgate/releases/tag/v0.27.3 x_refsource_MISC

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/warp-tech/warpgate/commit/8cb33a1a7c447ab0cde3a1ee9f95bf9dde905482 security-advisories@github.com
https://github.com/warp-tech/warpgate/pull/2356 security-advisories@github.com
https://github.com/warp-tech/warpgate/releases/tag/v0.27.3 security-advisories@github.com
https://github.com/warp-tech/warpgate/security/advisories/GHSA-qmr2-wp96-h9ff security-advisories@github.com

Remediations (10)

CVE-2026-69414 ShieldBreak Zero-Day: No Patch, and CISA BOD 26-04 Gives ...

web:blog.qualys.com

What can I do before Microsoft releases a patch ? Qualys TruRisk™ Eliminate provides a recommended mitigation for CVE - 2026 -69414 that can be applied to affected systems while Microsoft works on a fix . Assets can then be reassessed in Qualys VMDR to verify the remediation outcome.

2026-09-22 17:08 UTC
CISA Alerts on Actively Exploited Google Chromium Zero-Day

web:cyberpress.org

The Cybersecurity and Infrastructure Security Agency (CISA) has added a critical zero-day vulnerability in the Google Chromium engine to its Known Exploited Vulnerabilities (KEV) catalog. Tracked as CVE - 2026 -2441, this flaw is actively exploited in real-world attacks. CISA's move requires federal agencies to patch immediately and urges all organizations to follow suit to block potential ...

2026-09-22 17:08 UTC
Adobe Security Bulletins and Advisories | Security

web:helpx.adobe.com

This page contains important information regarding security vulnerabilities that could affect specific versions of Adobe products. Use this information to take the prescribed corrective actions.

2026-09-22 17:08 UTC
Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-09-22 17:08 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Access Microsoft Security Response Center's guide to address vulnerabilities, manage security risks, and keep your systems protected with the latest updates.

2026-09-22 17:08 UTC
Cisco Advance Notification for Publication of September 16, 2026 ...

web:sec.cloudapps.cisco.com

On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...

2026-09-22 17:08 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-22 17:08 UTC
SAP Security Patch Day - June 2026

web:support.sap.com

SAP security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the support portal and applies patches on priority to protect their SAP landscape. On 9th of June 2026 , SAP security patch day saw the release of 15 new security notes.

2026-09-22 17:08 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-22 17:08 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-22 17:08 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-91164.json.

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