What’s Vulnerable › Vulnerabilities

CVE-2022-3427: Corner Ad <= 1.0.56 - Cross-Site Request Forgery

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-12-15 · updated 2026-06-17
• Weakness: CWE-352

Description

The Corner Ad plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.56. This is due to missing or incorrect nonce validation on its corner_ad_settings_page function. This makes it possible for unauthenticated attackers to trigger the deletion of ads via forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• codepeople Corner Ad: through 1.0.56

References

• https://plugins.trac.wordpress.org/browser/corner-ad/trunk/corner-ad.php?rev=2782613#L240
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2765630%40corner-ad%2Ftrunk&old=2719671%40corner-ad%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0a6c5e9a-754f-41c8-b27b-caa133b5070f?source=cve
• https://plugins.trac.wordpress.org/browser/corner-ad/trunk/corner-ad.php?rev=2782613#L240
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2765630%40corner-ad%2Ftrunk&old=2719671%40corner-ad%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0a6c5e9a-754f-41c8-b27b-caa133b5070f

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