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Vulnerabilities

Vulnerability · CVE-2025-30215

NATS-Server is a High-Performance server for NATS.io, the cloud and edge native messaging system.

Published Apr 15, 2025 · catalog updated Apr 17, 2025 · NATS-Server is a High-Performance

Check if you run it

No confirmed exploitation is on record for CVE-2025-30215. EPSS is 0.60%. Act only if a listed version of NATS-Server is a High-Performance is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (NATS-Server is a High-Performance).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.60%
Remediation
Version ranges on file
Affected products
vendor nats-io nats-server 2.2.0, < 2.10.27

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 unprotec

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor nats-io nats-server 2.2.0, < 2.10.272.2.0, < 2.10.27

How to fix CVE-2025-30215

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-30215. EPSS is 0.60%. Act only if a listed version of NATS-Server is a High-Performance is installed.

Which versions are affected?

Compare what you have installed with nats-io nats-server 2.2.0, < 2.10.27 2.2.0, < 2.10.27. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.60%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 15, 2025 · EUVD

    Detected

    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 we

  2. Apr 17, 2025 · EUVD

    Updated

    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 we

Sources

  • CVE.orgVulnerability recordCVE-2025-30215

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-30215

    30-day exploitation probability 0.6%

    first.org
  • EUVDVulnerability recordEUVD-2025-11085

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.