What is CVE-2023-1539?

CVE-2023-1539 is a medium-severity vulnerability in Answer, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.3/10. Published 2023-03-21.

How severe is CVE-2023-1539?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Answer

CVE-2023-1539

Improper Restriction of Excessive Authentication Attempts in GitHub repository answerdev/answer prior to 1.0.6.

Published 2023-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Answer
Answerdev Answerdev/answer — versions unspecified

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

huntr.dev/bounties/b4df67f4-14ea-4051-97d4-26690c979a28 (Exploit, Patch, Third Party Advisory)
github.com/answerdev/answer/commit/813ad0b9894673b1bdd489a2e9ab60a44fe990af (Patch)

Frequently asked questions

What is CVE-2023-1539?: CVE-2023-1539 is a medium-severity vulnerability in Answer, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.3/10. Published 2023-03-21.
How severe is CVE-2023-1539?: Medium severity. CVSS v3 base score is 5.3 out of 10.