CVE-2025-11983

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

mediumExposure of Sensitive Information to an Unauthorized Actor

4.3

CVSS Score

4.3

CVSS Score

medium

Severity

2.6.0

Patched in

Time to patch

Description

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 Vector Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Low

Confidentiality

None

Integrity

None

Availability

Technical Details

Affected versions<=2.5.9

PublishedOctober 31, 2025

Last updatedNovember 1, 2025

Affected pluginwp-discourse

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/6b1524f3-1c59-49a1-bbe3-94dcfd232b1d?source=api-prod

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