WP Discourse <= 2.5.9 - Authenticated (Author+) Information Exposure
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.3epss 0.3%
exploitation probability
0.3%top 83% of all CVEs
observed exploitation
nono source reports it
The WP Discourse plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 2.5.9. This is due to the plugin unconditionally sending Discourse API credentials (Api-Key and Api-Username headers) to any host specified in a post's discourse_permalink custom field during comment synchronization. This makes it possible for authenticated attackers, with author-level access and above, to exfiltrate sensitive Discourse API credentials to attacker-controlled servers, as well as query internal services and potentially perform further attacks.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
scossar · WP DiscourseReferences
https://plugins.trac.wordpress.org/browser/wp-discourse/tags/2.5.9/lib/discourse-comment.php#L211https://plugins.trac.wordpress.org/browser/wp-discourse/tags/2.5.9/lib/discourse-comment.php#L218https://plugins.trac.wordpress.org/browser/wp-discourse/tags/2.5.9/lib/plugin-utilities.php#L486https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3384149%40wp-discourse&new=3384149%40wp-discourse&sfp_email=&sfph_mail=https://www.wordfence.com/threat-intel/vulnerabilities/id/6b1524f3-1c59-49a1-bbe3-94dcfd232b1d?source=cve