What is CVE-2023-1373?

CVE-2023-1373 is a medium-severity vulnerability in W4 Post List Project, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 6.1/10. Published 2023-04-17.

How severe is CVE-2023-1373?

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

Is CVE-2023-1373 known to be exploited?

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

Vulnerability in W4 Post List Project

CVE-2023-1373

The W4 Post List WordPress plugin before 2.4.6 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting

Published 2023-04-17 · 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: 0.005 (37.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

W4 Post List Project
W4 Post List — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/fa38f3e6-e04c-467c-969b-0f6736087589 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-1373?: CVE-2023-1373 is a medium-severity vulnerability in W4 Post List Project, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 6.1/10. Published 2023-04-17.
How severe is CVE-2023-1373?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-1373 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.