What is CVE-2023-4643?

CVE-2023-4643 is a high-severity vulnerability in Shortpixel Enable Media Replace, classified under CWE-502 DESERIALIZATION OF UNTRUSTED DATA. CVSS score: 8.8/10. Published 2023-10-16.

How severe is CVE-2023-4643?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2023-4643 known to be exploited?

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

Vulnerability in Shortpixel Enable Media Replace

CVE-2023-4643

The Enable Media Replace WordPress plugin before 4.1.3 unserializes user input via the Remove Background feature, which could allow Author+ users to perform PHP Object Injection when a suitable gadget is present on the blog

Published 2023-10-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% 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

Shortpixel Enable Media Replace
Enable Media Replace — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/d9125604-2236-435c-a67c-07951a1fc5b1 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-4643?: CVE-2023-4643 is a high-severity vulnerability in Shortpixel Enable Media Replace, classified under CWE-502 DESERIALIZATION OF UNTRUSTED DATA. CVSS score: 8.8/10. Published 2023-10-16.
How severe is CVE-2023-4643?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-4643 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.