GPUStack: attackers can run their own code
OFFICIAL NAME: GPUStack Improper Authentication Vulnerability
DO THIS FIRSTFind out if you use it. If you do, apply the vendor's fix. Not sure if you use it? Send this page to your IT provider or security lead and ask.
TECHNICAL SUMMARY GPUStack contains an improper authentication vulnerability which could allow 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.
WHY THIS VERDICT Attacks are confirmed. The vulnerability is 6 days old, so many systems are likely still unpatched. The severity score is critical (9.8).
WHY IT RANKS HERE Exploitation is confirmed by an authoritative source. The confirmation is 2 days old.
- HIGHEST CONFIRMED RUNG
- EXPLOITED
- CISA KEV
- LISTED
- EXPLOIT CODE
- NONE KNOWN
How far has it climbed?
01 TALK
■ CONFIRMEDNEWEST EVIDENCE · 2 INDEPENDENT SOURCESCVE-2026-102895 discussed publicly (CIRCL sighting). U.S. CISA adds IBM, SignalWire FreeSwitch, OpenSSH, and GPUStack flaws to its Known Exploited Vulnerabilities catalog.
02 EXPOSED
□ NOT TRACKED YETNO SOURCE FOR THIS STEP YETWe have no source that counts exposed systems yet. Internet scan data needs a partnership we do not have. No evidence here does not mean nothing is exposed.
03 TRIED
■ CONFIRMEDNEWEST EVIDENCE · 2 INDEPENDENT SOURCESAttacks that worked are confirmed (step 4), so attempts count as confirmed too.
04 EXPLOITED
■ CONFIRMEDNEWEST EVIDENCE · 2 INDEPENDENT SOURCESCISA Vulnrichment marks CVE-2026-102895 as actively exploited. GPUStack contains an improper authentication vulnerability which could allow 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.
05 DAMAGE
□ NOT TRACKED YETNO SOURCE FOR THIS STEP YETBreach notices and filings rarely name the flaw that was used, so we cannot link them to this event yet. No evidence here does not mean no harm.
When each thing happened
- DISCLOSED
- EXPLOIT CODE PUBLICNOT YET
- FIRST ATTACK REPORT
- CISA KEV LISTING
- US FEDERAL DEADLINE
THE FIX
CISA's instruction: apply the vendor's fix, or stop using the product if no fix exists. CISA set Nov 12, 2026 as the deadline for US federal agencies. It is a US government deadline; use it as a guide.
Questions to ask this week
- Do we run GPUStack? If yes, is it patched or cut off from the internet?
- Who owns fixing it, and by what date?
- Have we checked for signs of attack since the first report, not just since the patch?
How it unfolded
- Attack activity. NOV 8, 2026GPUStack Improper Authentication Vulnerability
- Attack activity. NOV 9, 2026CISA Vulnrichment marks CVE-2026-102895 as actively exploited
- NOV 9, 2026CVE-2026-102895 discussed publicly (CIRCL sighting) (39 reports, latest NOV 10)
- NOV 10, 2026U.S. CISA adds IBM, SignalWire FreeSwitch, OpenSSH, and GPUStack flaws to its Known Exploited Vulnerabilities catalog
SOURCES
- [1] CIRCL Vulnerability-Lookup sightings: CVE-2026-102895 discussed publicly (CIRCL sighting), NOV 10
- [2] Security Affairs: U.S. CISA adds IBM, SignalWire FreeSwitch, OpenSSH, and GPUStack flaws to its Known Exploited Vulnerabilities catalog, NOV 10
- [3] CVE List V5 and CISA Vulnrichment: CISA Vulnrichment marks CVE-2026-102895 as actively exploited, NOV 9
- [4] CISA Known Exploited Vulnerabilities: GPUStack Improper Authentication Vulnerability, NOV 8
- [5] CIRCL Vulnerability-Lookup sightings: 38 more reports