What is CVE-2023-1537?

CVE-2023-1537 is a critical-severity vulnerability in Answer, classified under Authentication Bypass by Capture-replay. CVSS score: 9.8/10. Published 2023-03-21.

How severe is CVE-2023-1537?

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

Vulnerability in Answer

CVE-2023-1537

Authentication Bypass by Capture-replay 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 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 (56.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.1% 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

Answer
Answerdev Answerdev/answer — versions unspecified

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

github.com/answerdev/answer/commit/813ad0b9894673b1bdd489a2e9ab60a44fe990af (Patch)
huntr.dev/bounties/171cde18-a447-446c-a9ab-297953ad9b86 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-1537?: CVE-2023-1537 is a critical-severity vulnerability in Answer, classified under Authentication Bypass by Capture-replay. CVSS score: 9.8/10. Published 2023-03-21.
How severe is CVE-2023-1537?: Critical severity. CVSS v3 base score is 9.8 out of 10.