CVE•Published 2023-10-30•Modified 2026-04-08•1 article on news•6 live references•NVD data

CVE-2023-5843Datafeedr · Ads_by_datafeedr.com

Vulnerability data via NVD (ingested)

CVSS v3.1

9.0

CRITICAL

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 7% of all CVEs

Weaknesses (CWE)

CWE-94Improper Control of Generation of Code ('Code Injection')

Description

The Ads by datafeedr.com plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 1.1.3 via the 'dfads_ajax_load_ads' function. This allows unauthenticated attackers to execute code on the server. The parameters of the callable function are limited, they cannot be specified arbitrarily.

Timeline

Published 2023-10-30

Modified 2026-04-08

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2023-5843

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/ads-by-datafeedr.com/"

Matches any site loading the "ads-by-datafeedr.com" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Datafeedr Ads By Datafeedr.com"

All exposed Datafeedr Ads By Datafeedr.com instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Ads By Datafeedr.com"

HTTP body or banner mentions "Ads By Datafeedr.com" — catches deploys Shodan didn't identify as a product.