Description
NATS-Server is a High-Performance server for NATS.io, the cloud and edge native messaging system. In versions starting from 2.2.0 but prior to 2.10.27 and 2.11.1, the management of JetStream assets happens with messages in the $JS. subject namespace in the system account; this is partially exposed into regular accounts to allow account holders to manage their assets. Some of the JS API requests were missing access controls, allowing any user with JS management permissions in any account to perform certain administrative actions on any JS asset in any other account. At least one of the unprotected APIs allows for data destruction. None of the affected APIs allow disclosing stream contents. This vulnerability is fixed in v2.11.1 or v2.10.27.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nats-io | nats-server | >= 2.2.0, < 2.10.27, >= 2.11.0-RC.1, < 2.11.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nats-server | 2.10.27-1 | — |
| Debian 13 | nats-server | 2.10.27-1 | — |
| Debian 12 | nats-server | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | nats-server | No fix yet | — |
| Ubuntu 24.04 LTS | nats-server | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250422T152923-1.1 | openSUSE-SU-2025:15014-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | nats-server | 2.10.27-r0 | — |
| Alpine v3.23 | nats-server | 2.10.27-r0 | — |
| Alpine v3.22 | nats-server | 2.10.27-r0 | — |
| Alpine v3.21 | nats-server | 2.10.27-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | telegraf | 1.31.0-9 | — |
| Azure Linux 2 (CBL-Mariner) | telegraf | 1.29.4-15 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | nats-server | 2.12.1-r1 | — |
| Wolfi rolling | nats-top +1 | 0.6.3-r3 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/nats-io/nats-server/v2 | >= 2.11.0-RC.1, < 2.11.1 | 2.11.1 | GHSA-fhg8-qxh5-7q3w |
| Go | github.com/nats-io/nats-server/v2 | >= 2.2.0, < 2.10.27 | 2.10.27 | GHSA-fhg8-qxh5-7q3w |
| Go | github.com/nats-io/nats-server/v2 | >= 2.2.0, < 2.10.27 · >= 2.11.0, < 2.11.1 | 2.10.27, 2.11.1 | GO-2025-3600 |
Advisories 2
- openSUSE-SU-2025:15014-1 govulncheck-vulndb-0.0.20250422T152923-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0782 NATS Server: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Apr 9, 2025