6.5

CVE-2023-47090: linuxfoundation nats-server Incorrect Authorization

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-47090DEBIAN-CVE-2023-47090CGA-66qp-23c3-66w2
Published 30-10-2023Last modified 09-09-2024
Open JSON

Vulnerability summary

CVE-2023-47090 is a medium (CVSS 6.5) Incorrect Authorization vulnerability in linuxfoundation nats-server. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.66%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 2
CGA-8WRR-6C9X-2FP2CGA-C789-J95H-R755

Timeline

  1. 30-10-2023
    PublishedVulnerability first disclosed.
  2. 09-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

0.00 pp

From 0.66% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard1 product
  • nats< 0.1.1-r5
Debian1 product
  • nats-serverAll versions (No fix recorded) | < 2.10.3-1
Github.com/nats-io/nats-server1 product
  • v2≥ 2.2.0, < 2.9.23 | ≥ 2.10.0, < 2.10.2
Linuxfoundation1 product
Ubuntu1 product
  • nats-server< 2.10.3-1
Wolfi1 product
  • nats< 0.1.1-r5

6 vendors · 6 products

References

14 links
Show all 14 references