CVE-2026-102894
criticalGPUStack 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. From 0.7.1 until 2.2.2, the /auth/saml/callback endpoint decoded SAML XML, used its NameID and attributes to resolve or provision a user, and minted a gpustack_session JWT without calling OneLogin_Saml2_Auth.process_response to verify the signature, issuer, audience, destination, or time conditions. Any network client could submit an identity for an existing user, including an administrator, or provision a new non-administrator account, even when SAML was not configured. Response and Assertion identifiers were not consumed, so captured signed responses could also be replayed. This issue is fixed in version 2.2.2.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/gpustack/gpustack/commit/705edbe1b5feec63959306daecd640e1c70eced2 security-advisories@github.com
- https://github.com/gpustack/gpustack/commit/adc6d82be34e48390720a1361df616e2ea9d6d45 security-advisories@github.com
- https://github.com/gpustack/gpustack/pull/5753 security-advisories@github.com
- https://github.com/gpustack/gpustack/pull/5923 security-advisories@github.com
- https://github.com/gpustack/gpustack/releases/tag/v2.2.2 security-advisories@github.com
- https://github.com/gpustack/gpustack/security/advisories/GHSA-62m9-f875-rqw6 security-advisories@github.com