CVE•Published 2021-12-15•1 article on news•7 live references•NVD data

CVE-2021-36888

Vulnerability data via CVEDB (Shodan)

CVSS v3.1

9.8

CRITICAL

EPSS percentile

Exploit Prediction Scoring System · top 7% of all CVEs

Description

Unauthenticated Arbitrary Options Update vulnerability leading to full website compromise discovered in Image Hover Effects Ultimate (versions <= 9.6.1) WordPress plugin.

Timeline

Published 2021-12-15

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus 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-2021-36888

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/image-hover-effects/"

Matches any site loading the "image-hover-effects" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Blocksera Image Hover Effects"

All exposed Blocksera Image Hover Effects instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Image Hover Effects"

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