CVE-2023-47090

moderate-risk
Published 2023-10-30

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.

Do I need to act?

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0.26% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Linuxfoundation

References (6)

Mailing List http://www.openwall.com/lists/oss-security/2023/10/30/1
Vendor Advisory https://github.com/nats-io/nats-server/security/advisories/GHSA-fr2g-9hjm-wr23
Mailing List https://www.openwall.com/lists/oss-security/2023/10/13/2
Mailing List http://www.openwall.com/lists/oss-security/2023/10/30/1
Vendor Advisory https://github.com/nats-io/nats-server/security/advisories/GHSA-fr2g-9hjm-wr23
Mailing List https://www.openwall.com/lists/oss-security/2023/10/13/2
30
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal