Is CVE-2025-30215 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-30215 being exploited in the wild.

How severe is CVE-2025-30215?

Critical severity, with a CVSS score of 9.6, published 15 April 2025.

Which products and versions are affected?

github.com/nats-io/nats-server/v2 (Go) SEMVER:introduced=2.11.0-RC.1,fixed=2.11.1, SEMVER:introduced=2.2.0,fixed=2.10.27,introduced=2.11.0,fixed=2.11.1; NATS Server >= 2.2.0, = 2.11.0-RC.1, < 2.11.1.

Is there a fix for CVE-2025-30215?

Yes. github.com/nats-io/nats-server/v2 (Go): upgrade to 2.11.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2025-30215 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2025-30215?

Check whether you run github.com/nats-io/nats-server/v2 (Go) or NATS Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-30215: NATS Server authorization bypass in JetStream admin APIs

Q: Is there a fix for CVE-2025-30215?

Yes. github.com/nats-io/nats-server/v2 (Go): upgrade to 2.11.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2025-30215 attacked?

It is attacked over the network, in a hosted service.

Q: Am I affected by CVE-2025-30215?

Check whether you run github.com/nats-io/nats-server/v2 (Go) or NATS Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-30215 · Severity: critical · CVSS 9.6 · Published 2025-04-15

NATS Server, a high-performance messaging system, contains a vulnerability in its JetStream management component. An authenticated user with basic permissions can bypass security boundaries to delete data or disrupt services belonging to other accounts. This could lead to total data loss or significant service outages across a shared NATS infrastructure.

Technologies: github.com/nats-io/nats-server/v2 (Go), NATS Server. Vendors: Go, NATS.

Quick answers

Is CVE-2025-30215 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-30215 being exploited in the wild.
How severe is CVE-2025-30215?: Critical severity, with a CVSS score of 9.6, published 15 April 2025.
Which products and versions are affected?: github.com/nats-io/nats-server/v2 (Go) SEMVER:introduced=2.11.0-RC.1,fixed=2.11.1, SEMVER:introduced=2.2.0,fixed=2.10.27,introduced=2.11.0,fixed=2.11.1; NATS Server >= 2.2.0, < 2.10.27; >= 2.11.0-RC.1, < 2.11.1.
Is there a fix for CVE-2025-30215?: Yes. github.com/nats-io/nats-server/v2 (Go): upgrade to 2.11.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2025-30215 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2025-30215?: Check whether you run github.com/nats-io/nats-server/v2 (Go) or NATS Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

github.com/nats-io/nats-server/v2 (Go): upgrade to 2.11.1 or later
```
go get github.com/nats-io/nats-server/v2@v2.11.1
```

Technical details

NATS Server fails to enforce proper authorization checks on four administrative JetStream APIs: account purge, server remove, account stream move, and account stream cancel-move. The root cause is a lack of restriction to the system account; any user with permission to publish to the '$JS.>' subject namespace can trigger these actions. An attacker can exploit this to delete all JetStream data for any account (via $JS.API.ACCOUNT.PURGE) or disrupt cluster topology. The vulnerability is patched in versions 2.10.27 and 2.11.1.

Affected products

NATS NATS Server >= 2.2.0, < 2.10.27; >= 2.11.0-RC.1, < 2.11.1

Identifiers

CVE-2025-30215
GHSA-fhg8-qxh5-7q3w
GO-2025-3600

Timeline

2025-04-15: advisory: GHSA-fhg8-qxh5-7q3w published
2025-04-15: disclosed
2025-04-15: patched

References

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