Open WebUI: Redis Cache Keys tool_servers and terminal_servers Missing Instance Prefix Enable Cross-Instance Cache Poisoning
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| open-webui | open-webui | affected |
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| Open-webui | Open-webui |
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| Source | ID | Title |
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Github GHSA |
GHSA-3x8w-4f7p-xxc2 | Open WebUI: Redis Cache Keys tool_servers and terminal_servers Missing Instance Prefix Enable Cross-Instance Cache Poisoning |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.305% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Openwebui
Openwebui open Webui |
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| CPEs | cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openwebui
Openwebui open Webui |
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| First Time appeared |
Open-webui
Open-webui open-webui |
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| Vendors & Products |
Open-webui
Open-webui open-webui |
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| Description | Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the tool_servers and terminal_servers keys in utils/tools.py do use a prefix. When two or more Open WebUI instances share a Redis database (a supported and documented deployment pattern, e.g., for multi-region deployments, blue-green setups, or cluster topologies), the unprefixed keys collide. An admin on Instance A writing to tool_servers overwrites the value read by Instance B — causing Instance B's users to receive Instance A's tool server configuration. This vulnerability is fixed in 0.9.0. | |
| Title | Open WebUI: Redis Cache Keys tool_servers and terminal_servers Missing Instance Prefix Enable Cross-Instance Cache Poisoning | |
| Weaknesses | CWE-668 | |
| References |
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| Metrics |
cvssV3_1
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