What is CVE-2023-48054?

CVE-2023-48054 is a high-severity vulnerability in Localstack, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2023-11-16.

How severe is CVE-2023-48054?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Localstack

CVE-2023-48054

Missing SSL certificate validation in localstack v2.3.2 allows attackers to eavesdrop on communications between the host and server via a man-in-the-middle attack.

Vulnerability class: Improper Certificate Validation

Published 2023-11-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.7th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Localstack — versions 2.3.2

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

gxx777.github.io/localstack_v_2.3.2_Cryptographic_API_Misuse_Vulnerability.md (Third Party Advisory)

Frequently asked questions

What is CVE-2023-48054?: CVE-2023-48054 is a high-severity vulnerability in Localstack, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2023-11-16.
How severe is CVE-2023-48054?: High severity. CVSS v3 base score is 7.4 out of 10.