Vulnerability report

Trusted Third Party Report Confirmed Confidence In CISA KEV

CVE-2026-102895

gpustack

Gpustack · affected before 2.2.0

Watch CVE-2026-102895 Browse KEV feed
Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Trusted Third Party Report
EPSS
0.3%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-102895 is an unauthenticated vulnerability affecting gpustack. GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning.

Have exploitation attempts been observed?

Yes. Exploitation attempts have been reported for this vulnerability. Previdian lists it as a known exploited vulnerability. Listed in CISA KEV. Also reported by third-party sources. Confidence is confirmed.

Who is affected?

gpustack affected before 2.2.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning

GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning. Prior to 2.2.0, get_current_user in gpustack/api/auth.py treated a loopback request source as the built-in administrator when force_auth_localhost was false, which was the default. A remote request could appear to originate from 127.0.0.1 because client_ip_getter accepted a same-host reverse proxy peer or a client-supplied X-GPUStack-Real-IP loopback value.

The bypass allowed unauthenticated administrative access, including user and model changes, persistent administrator API-key creation, disclosure of worker and cloud-provider secrets, and code execution through POST /v2/inference-backends/from-yaml. Exploitation was observed in the wild against a 2.1.1 deployment. This issue is fixed in version 2.2.0.

gpustack Affected
gpustack
Before 2.2.0
Published
04 Nov 2026
Exploitation Attempts Reported
05 Nov 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

cisa

CVE References

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation Attempts Observed in the Wild

CVE

Recorded 05 Nov 2026

A trusted third party reported exploitation attempts.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CVE First 2026-11-05 08:51 UTC
CISA 2026-11-09 17:00 UTC
Github Advisory Database (PIP) 2026-11-10 01:21 UTC
The Hacker News 2026-11-10 07:32 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.3%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Authentication CWE-287 Authentication Bypass by Spoofing CWE-290 Origin Validation Error CWE-346

Recent mention · The Hacker News

CISA Warns of Active Exploitation of OpenSSH, GPUStack, FreeSWITCH, and IBM Flaws

Ravie LakshmananNov 10, 2026Vulnerability / Cyber Attack The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added four security flaws impacting GPUStack, SignalWire FreeSwitch, OpenBSD OpenSSH, and IBM Aspera Faspex to its Known Exploited...

Read full advisory

All Mentions

Recent mention · The Hacker News

CISA Warns of Active Exploitation of OpenSSH, GPUStack, FreeSWITCH, and IBM Flaws

The Hacker News · 10 Nov 2026

Ravie LakshmananNov 10, 2026Vulnerability / Cyber Attack The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added four security flaws impacting GPUStack, SignalWire FreeSwitch, OpenBSD OpenSSH, and IBM Aspera Faspex to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerabilities are listed below - CVE-2026-123218 (CVSS score: 9.8) - An incorrect authorization vulnerability in IBM Aspera Faspex that could allow an authenticated user to craft a specific message to bypass authorization, causing privilege escalations....

Recent mention · Github Advisory Database (PIP)

[gpustack] GPUStack: Authentication bypass via trusted loopback source (reverse-proxy TCP peer or X-GPUStack-Real-IP header) grants unauthenticated admin

Github Advisory Database (PIP) · 09 Nov 2026

Impact In GPUStack before v2.2.0, get_current_user (in gpustack/api/auth.py) promotes any request whose source is considered loopback to the built-in administrator account when force_auth_localhost is False (the default). The "source" is derived by client_ip_getter, which can be made to report 127.0.0.1 without any credentials in two ways: Same-host reverse proxy (TCP peer). In the canonical self-hosted shape — GPUStack behind a same-host reverse proxy with proxy_pass http://127.0.0.1: — every remote request arrives at GPUStack with TCP peer 127.0.0.1, so the loopback auto-admin branch...

Timeline

From disclosure to observed exploitation attempts

  1. 07:32 UTC

    KEV confirmed by The Hacker News

    Exploitation attempts reported by an external source

  2. 01:21 UTC

    KEV confirmed by Github Advisory Database (PIP)

    Exploitation attempts reported by an external source

  3. 17:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  4. 08:51 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party report of exploitation attempts

  5. 21:16 UTC

    CVE published

    Vulnerability disclosed publicly

  6. 17:34 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-102895

Sample API response 
{
  "cve_id": "CVE-2026-102895",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.00331,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}