CVSS 3.1
4.9 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:NCVE-2026-33222
Medium (4.9) in linuxfoundation nats-server. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/nats-io/nats-server/v2 2.11.15, 2.12.6.
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, users with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, if developers have configured users to have limited JetStream restore permissions, temporarily remove those permissions.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
- CWE
- CWE-285
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linuxfoundation:nats-server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-9983-vrx2-fg9c | Go | github.com/nats-io/nats-server/v2 | <2.11.15 | 2.11.15 |
| GHSA-9983-vrx2-fg9c | Go | github.com/nats-io/nats-server/v2 | >=2.12.0-RC.1 <2.12.6 | 2.12.6 |
| GHSA-9983-vrx2-fg9c | Go | github.com/nats-io/nats-server | all versions | no fix published |
| GO-2026-4832 | Go | github.com/nats-io/nats-server | all versions | no fix published |
| GO-2026-4832 | Go | github.com/nats-io/nats-server/v2 | <2.11.15 >=2.12.0-RC.1 <2.12.6 | 2.11.15, 2.12.6 |