What is CVE-2023-1538?

CVE-2023-1538 is a medium-severity vulnerability in Answer, classified under CWE-208. CVSS score: 5.3/10. Published 2023-03-21.

How severe is CVE-2023-1538?

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

Vulnerability in Answer

CVE-2023-1538

Observable Timing Discrepancy 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:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.6% 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)

References

github.com/answerdev/answer/commit/813ad0b9894673b1bdd489a2e9ab60a44fe990af (Patch)
huntr.dev/bounties/ac0271eb-660f-4966-8b57-4bc660a9a1a0 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-1538?: CVE-2023-1538 is a medium-severity vulnerability in Answer, classified under CWE-208. CVSS score: 5.3/10. Published 2023-03-21.
How severe is CVE-2023-1538?: Medium severity. CVSS v3 base score is 5.3 out of 10.