Description
The JWT library in NATS nats-server before 2.1.9 allows a denial of service (a nil dereference in Go code).
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 | golang-github-nats-io-jwt | 2.2.0-1 | — |
| Debian 13 | golang-github-nats-io-jwt | 2.2.0-1 | — |
| Debian 12 | golang-github-nats-io-jwt | 2.2.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | golang-github-nats-io-jwt | No fix yet | — |
| Ubuntu 26.04 LTS | golang-github-nats-io-jwt | No fix yet | — |
| Ubuntu 25.10 | golang-github-nats-io-jwt | No fix yet | — |
| Ubuntu 24.04 LTS | golang-github-nats-io-jwt | No fix yet | — |
| Ubuntu 22.04 LTS | golang-github-nats-io-jwt | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | golang-github-nats-io-jwt | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/nats-io/jwt | < 1.1.0 | 1.1.0 | GHSA-h2fg-54x9-5qhq |
| Go | github.com/nats-io/nats-server/v2 | < 2.1.9 | 2.1.9 | GHSA-hmm9-r2m2-qg9w |