No External Links <= 5.2.0 - Unauthenticated Stored Cross-Site Scripting via Log URL via /goto/{base64} Redirect
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
The No External Links plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Log URL via /goto/{base64} Redirect in all versions up to, and including, 5.2.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the administrator has enabled the 'Link Encoding: Base64' option in the plugin settings.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
mihdan · No External LinksReferences
https://plugins.trac.wordpress.org/browser/mihdan-no-external-links/tags/5.2.0/admin/LogTable.php#L95https://plugins.trac.wordpress.org/browser/mihdan-no-external-links/tags/5.2.0/public/Frontend.php#L451https://plugins.trac.wordpress.org/browser/mihdan-no-external-links/tags/5.2.0/public/Frontend.php#L801https://plugins.trac.wordpress.org/browser/mihdan-no-external-links/tags/5.2.0/public/Frontend.php#L989https://plugins.trac.wordpress.org/changeset?reponame=&old=3719796%40mihdan-no-external-links&new=3719796%40mihdan-no-external-linkshttps://www.wordfence.com/threat-intel/vulnerabilities/id/ab5a9850-8990-4e24-9ac3-5b92564c4ad9?source=cve