What is CVE-2023-23560?

CVE-2023-23560 is a critical-severity vulnerability in Lexmark B2236, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2023-01-23.

How severe is CVE-2023-23560?

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

Is CVE-2023-23560 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Lexmark B2236

CVE-2023-23560

In certain Lexmark products through 2023-01-12, SSRF can occur because of a lack of input validation.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2023-01-23 · 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: 0.139 (96.4th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.139 · newest: 0.139 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

support.lexmark.com/alerts/ (Vendor Advisory)
publications.lexmark.com/publications/security-alerts/CVE-2023-23560.pdf (Vendor Advisory)

Frequently asked questions

What is CVE-2023-23560?: CVE-2023-23560 is a critical-severity vulnerability in Lexmark B2236, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2023-01-23.
How severe is CVE-2023-23560?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-23560 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.