CVE•Published 2024-01-11•Modified 2026-04-08•1 article on news•6 live references•NVD data

CVE-2023-5504Inpsyde · Backwpup

Vulnerability data via NVD (ingested)

CVSS v3.1

8.7

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 29% of all CVEs

Weaknesses (CWE)

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Description

The BackWPup plugin for WordPress is vulnerable to Directory Traversal in versions up to, and including, 4.0.1 via the Log File Folder. This allows authenticated attackers to store backups in arbitrary folders on the server provided they can be written to by the server. Additionally, default settings will place an index.php and a .htaccess file into the chosen directory (unless already present) when the first backup job is run that are intended to prevent directory listing and file access. This means that an attacker could set the backup directory to the root of another site in a shared environment and thus disable that site.

Timeline

Published 2024-01-11

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-2023-5504

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/backwpup/"

Matches any site loading the "backwpup" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Inpsyde Backwpup"

All exposed Inpsyde Backwpup instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Backwpup"

HTTP body or banner mentions "Backwpup" — catches deploys Shodan didn't identify as a product.