What is CVE-2023-45751?

CVE-2023-45751 is a critical-severity vulnerability in Posimyth Nexter Extension, classified under Code Injection. CVSS score: 9.1/10. Published 2023-12-29.

How severe is CVE-2023-45751?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2023-45751 known to be exploited?

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

RCE in Posimyth Nexter Extension

CVE-2023-45751

Improper Control of Generation of Code ('Code Injection') vulnerability in POSIMYTH Nexter Extension.This issue affects Nexter Extension: from n/a through 2.0.3.

Vulnerability class: RCE (Remote Code Execution)

Published 2023-12-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (45.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/vulnerability/nexter-extension/wordpress-nexter-extensi… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-45751?: CVE-2023-45751 is a critical-severity vulnerability in Posimyth Nexter Extension, classified under Code Injection. CVSS score: 9.1/10. Published 2023-12-29.
How severe is CVE-2023-45751?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2023-45751 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.