CVE-2025-11983

WP Discourse <= 2.5.9 - Authenticated (Author+) Information Exposure

CVSS 4.3 MEDIUMEPSS 0.2%CWE-200

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 Discourse

References

https://plugins.trac.wordpress.org/browser/wp-discourse/tags/2.5.9/lib/discourse-comment.php#L211 https://plugins.trac.wordpress.org/browser/wp-discourse/tags/2.5.9/lib/discourse-comment.php#L218 https://plugins.trac.wordpress.org/browser/wp-discourse/tags/2.5.9/lib/plugin-utilities.php#L486 https://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