Vulnerability identifier: #VU71600
Vulnerability risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-200
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Discourse
Web applications /
Forum & blogging software
Vendor: Civilized Discourse Construction Kit, Inc.
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to an error in application. Using the exclude_tag param a use can filter out topics and deduce, which ones are using a specific hidden tag. This affects any Discourse site using hidden tags in public categories.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Discourse: 0.8.0 - 3.0.0 beta16
External links
http://github.com/discourse/discourse/security/advisories/GHSA-qgj5-g5vf-fm7q
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.