What is CVE-2022-4544?

CVE-2022-4544 is a medium-severity vulnerability in Wpchill Mashshare, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 5.4/10. Published 2023-01-16.

How severe is CVE-2022-4544?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2022-4544 known to be exploited?

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

Vulnerability in Wpchill Mashshare

CVE-2022-4544

The MashShare WordPress plugin before 3.8.7 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

Published 2023-01-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (42.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% 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

Wpchill Mashshare
Social Media Share Buttons | Mashshare — versions 0

Public proof-of-concept exploits

References

wpscan.com/vulnerability/96e34d3d-627f-42f2-bfdb-c9d47dbf396c (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2022-4544?: CVE-2022-4544 is a medium-severity vulnerability in Wpchill Mashshare, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 5.4/10. Published 2023-01-16.
How severe is CVE-2022-4544?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2022-4544 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.