Discourse up to 3.0.0/3.1.0.beta1 Tag Route information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability, which was classified as problematic, has been found in Discourse up to 3.0.0/3.1.0.beta1. This issue affects some unknown functionality of the component Tag Route Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and 3.1.0.beta2 on the `beta` and `tests-passed` branches, the contents of latest/top routes for restricted tags can be accessed by unauthorized users. This issue is patched in version 3.0.1 on the `stable` branch and 3.1.0.beta2 on the `beta` and `tests-passed` branches. There are no known workarounds.

The weakness was presented 01/28/2023 as GHSA-hvj9-g84x-5prx. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-23620 since 01/16/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 3.0.1 or 3.1.0.beta2 eliminates this vulnerability. Applying the patch 105fee978d73b0ec23ff814a09d1c0c9ace95164 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.




  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (GitHub, Inc.): 🔒



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍


Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Discourse 3.0.1/3.1.0.beta2
Patch: 105fee978d73b0ec23ff814a09d1c0c9ace95164


01/16/2023 CVE reserved
01/28/2023 +12 days Advisory disclosed
01/28/2023 +0 days VulDB entry created
03/18/2023 +49 days VulDB last update


Advisory: GHSA-hvj9-g84x-5prx
Status: Confirmed

CVE: CVE-2023-23620 (🔒)


Created: 01/28/2023 01:30 PM
Updated: 03/18/2023 08:29 AM
Changes: 01/28/2023 01:30 PM (51), 03/18/2023 08:29 AM (1)
Complete: 🔍


No comments yet. Languages: en.

Please log in to comment.

Want to stay up to date on a daily basis?

Enable the mail alert feature now!