CVE-2026-18621 Data-sciences-pipeline: dsp: v1 argo template path accepts arbitrary workflow spec, bypassing all v2 security hardening
Attackers with namespace editor privileges can bypass security hardening via the V1 API to gain node-root access and execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18621?
CVE-2026-18621 is a high-severity vulnerability in Red Hat AI Inference Server, published on 10 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw was found in Data Science Pipelines (DSP). An attacker with namespace editor privileges can bypass security hardening by submitting a malicious Argo Workflow through the V1 API path. This allows the API server to create pods with elevated privileges, acting as a 'confused deputy' on behalf of the attacker. Successful exploitation grants the attacker node-root access, enabling arbitrary code execution and full control over the underlying node.
Weakness: CWE-266
Which versions are affected by CVE-2026-18621?
How do I fix CVE-2026-18621?
No fix has been published for CVE-2026-18621 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18621 being exploited?
There is no known exploitation of CVE-2026-18621 in the wild and no public exploit code.
Sources
Also known as GHSA-6wxg-hpw6-m2x7.