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4.3
cleanstart nats-server may allow unauthorized access
published 4 days ago
Summary
The NATS server from cleanstart is vulnerable, potentially letting attackers connect without permission and read or change messages. This could expose private information and interrupt communication between your applications. Update to the latest version or apply the vendor's security patch promptly.
What to do
- Update cleanstart nats-server to version 2.12.5-r0.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| CleanStart | cleanstart | nats-server |
< 2.12.5-r0 Fix: upgrade to 2.12.5-r0
|
Original advisory text
NATS-Server is a High-Performance server for NATS
Security vulnerability affects the nats-server package. NATS-Server is a High-Performance server for NATS.
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker partial control (estimated)
Timeline
Published31 Oct 2026
Updated31 Oct 2026
First seen31 Oct 2026
Sources
CLEANSTART-2026-QL58361 · OSV
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