Vulnerability · Published Oct 30, 2023 · Assigned by mitre
CVE-2023-47090
Medium 6.5
In plain English
A medium-severity security flaw in the nats-server package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.8%top 42.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
NATS nats-server before 2.9.23 and 2.10.x before 2.10.2 has an authentication bypass. An implicit $G user in an authorization block can sometimes be used for unauthenticated access, even when the intention of the configuration was for each user to have an account. The earliest affected version is 2.2.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nats-server | no fix listed | DEBIAN-CVE-2023-47090 |
| Debian:13 | nats-server | 2.10.3-1 | DEBIAN-CVE-2023-47090 |
| Debian:14 | nats-server | 2.10.3-1 | DEBIAN-CVE-2023-47090 |
| Go | github.com/nats-io/nats-server/v2 | 2.10.2 | GHSA-fr2g-9hjm-wr23 |
| Go | github.com/nats-io/nats-server/v2 | 2.10.2, 2.9.23 | GO-2023-2133 |
| Go | github.com/nats-io/nats-server/v2 | 2.9.23 | GHSA-fr2g-9hjm-wr23 |
| Ubuntu:24.04:LTS | nats-server | 2.10.3-1 | UBUNTU-CVE-2023-47090 |