How severe is CVE-2023-4643?

CVE-2023-4643 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4643 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4643?

CVE-2023-4643 affects Shortpixel Enable Media Replace. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4643?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-4643 published?

CVE-2023-4643 was published on 2023-10-16 and last updated on 2026-06-17.

CVE-2023-4643

CVE-2023-4643 is a high-severity vulnerability in Shortpixel Enable Media Replace with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Shortpixel Enable Media Replace
Published: 2023-10-16
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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
How severe is CVE-2023-4643?: CVE-2023-4643 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4643 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4643?: CVE-2023-4643 affects Shortpixel Enable Media Replace. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4643?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-4643 published?: CVE-2023-4643 was published on 2023-10-16 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/d9125604-2236-435c-a67c-07951a1fc5b1

Affected products (1)

cpe:2.3:a:shortpixel:enable_media_replace:*:*:*:*:*:wordpress:*:*

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