What is CVE-2023-5211?

CVE-2023-5211 is a medium-severity vulnerability in Fattura24, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-10-31.

How severe is CVE-2023-5211?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2023-5211 known to be exploited?

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

XSS in Fattura24

CVE-2023-5211

The Fattura24 WordPress plugin before 6.2.8 does not sanitize or escape the 'id' parameter before outputting it back in the page, leading to a reflected Cross-Site Scripting vulnerability.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-10-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (31.4th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Fattura24
Fattura24 — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/aa868380-cda7-4ec6-8a3f-d9fa692908f2 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-5211?: CVE-2023-5211 is a medium-severity vulnerability in Fattura24, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-10-31.
How severe is CVE-2023-5211?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-5211 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.