CVE-2025-30215 | NATS-Server Fails to Authorize Certain Jetstream Admin APIs

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.

Published: 2025-04-16 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-30215 is rated Moderate Risk (43.1/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.04%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-30215

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-17 0.07% 0.04% -0.02%
2 2026-02-09 0.02% 0.07% +0.05%
3 2025-12-18 — 0.02% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-30215

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.6 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.1 5.8 [email protected]

Weakness enumeration for CVE-2025-30215

GitHub Security Advisory for CVE-2025-30215

GHSA-fhg8-qxh5-7q3w · Severity: critical · Ecosystem: go — NATS Server may fail to authorize certain Jetstream admin APIs

OS Trackers for CVE-2025-30215

vendor priority summary link
alpine critical CVE-2025-30215: 1 source package rows (nats-server); 13 state rows across 3 repos (3.21-community, 3.22-community, edge-community); fixed 3, open 10. https://security.alpinelinux.org/vuln/CVE-2025-30215
debian not yet assigned CVE-2025-30215 not yet assigned priority: Debian including 1 source packages (nats-server), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 3, open 1. https://security-tracker.debian.org/tracker/CVE-2025-30215
redhat critical — https://access.redhat.com/security/cve/CVE-2025-30215
ubuntu medium CVE-2025-30215 medium priority: Ubuntu including 1 source packages (nats-server), 7 status rows across 7 suites (focal, jammy, noble, oracular, plucky, questing, upstream): DNE 2, ignored 2, needs-triage 2, released 1. https://ubuntu.com/security/CVE-2025-30215

Affected software / configurations for CVE-2025-30215

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-30215

cvelogic Threat Intelligence