CVE-2020-9301 Code injection in Netflix Spinnaker
Authenticated attackers can exploit SpEL expression handling to read and write arbitrary files within the Spinnaker orca container.
- 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-2020-9301?
CVE-2020-9301 is a high-severity code injection vulnerability in Netflix Spinnaker, published on 11 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nolan Ray from Apple Information Security identified a security vulnerability in Spinnaker, all versions prior to version 1.23.4, 1.22.4 or 1.21.5. The vulnerability exists within the handling of SpEL expressions that allows an attacker to read and write arbitrary files within the orca container via authenticated HTTP POST requests.
Weakness: CWE-502
Which versions are affected by CVE-2020-9301?
It affects 1 product.
Products include Linuxfoundation Spinnaker.
How do I fix CVE-2020-9301?
No fix has been published for CVE-2020-9301 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2020-9301 being exploited?
There is no known exploitation of CVE-2020-9301 in the wild and no public exploit code.
Other vulnerabilities in Netflix Spinnaker
- CVE-2026-32604 Spinnaker: RCE when using gitrepo artifact types due to improper sanitization of user input on branch and paths
- CVE-2026-32613 Spinnaker vulnerable to RCE via expression parsing due to unrestricted context handling
- CVE-2021-43832 Improper Access Control in spinnaker
- CVE-2026-44795 Spinnaker: Non-safe yaml deserialization allowing RCE when using specific types
- CVE-2025-61916 Spinnaker vulnerable to SSRF due to improper restrictions on http from user input
Sources
Also known as GHSA-mgvh-5mj6-fprr.