What is CVE-2023-2531?

CVE-2023-2531 is a critical-severity vulnerability in Azuracast, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2023-05-05.

How severe is CVE-2023-2531?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Azuracast

CVE-2023-2531

Improper Restriction of Excessive Authentication Attempts in GitHub repository azuracast/azuracast prior to 0.18.3.

Published 2023-05-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Azuracast
Azuracast Azuracast/azuracast — versions unspecified

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

huntr.dev/bounties/20463eb2-0f9d-4ea3-a2c8-93f80e7aca02 (Exploit, Patch, Mitigation)
github.com/azuracast/azuracast/commit/bdb23594ad3e0c47c8568ce028a7c244a406cf9d (Patch)

Frequently asked questions

What is CVE-2023-2531?: CVE-2023-2531 is a critical-severity vulnerability in Azuracast, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2023-05-05.
How severe is CVE-2023-2531?: Critical severity. CVSS v3 base score is 9.8 out of 10.