CVE-2026-23537
Description
A vulnerability has been identified in the Feast Feature Server’s `/save-document` endpoint that allows an unauthenticated remote attacker to write arbitrary JSON files to the server's filesystem. Although the system attempts to restrict file locations, these protections can be bypassed, enabling an attacker to overwrite vital application configurations or startup scripts. Because this flaw requires no credentials or special privileges, any attacker with network access to the server can potentially compromise the integrity of the system. This could lead to unauthorized system modifications, denial of service through disk exhaustion, or potential remote code execution.
How to fix
- Feast Feast Feature Server0.59.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Feast Feast Feature Server | v < 0.59.0 | 0.59.0 |
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