Tyrrrz DiscordChatExporter up to 2.47.1 HTML Export MessageGroupTemplate.cshtml FormatMarkdownAsync/FormatEmbedMarkdownAsync HTML injection

Summaryinfo

A vulnerability was found in Tyrrrz DiscordChatExporter up to 2.47.1. It has been rated as problematic. This vulnerability affects the function FormatMarkdownAsync/FormatEmbedMarkdownAsync of the file DiscordChatExporter.Core/Exporting/MessageGroupTemplate.cshtml of the component HTML Export. This manipulation of the argument Content/ForwardedMessage.Content/ReferencedMessage.Content/Title/Description/Name/Value causes HTML injection. This vulnerability is tracked as CVE-2026-54682. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Tyrrrz DiscordChatExporter up to 2.47.1 and classified as problematic. Affected by this vulnerability is the function FormatMarkdownAsync/FormatEmbedMarkdownAsync of the file DiscordChatExporter.Core/Exporting/MessageGroupTemplate.cshtml of the component HTML Export. The manipulation of the argument Content/ForwardedMessage.Content/ReferencedMessage.Content/Title/Description/Name/Value with an unknown input leads to a html injection vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

DiscordChatExporter saves Discord chat logs to a file. Prior to 2.47.2, HTML exports generated with markdown formatting disabled pass attacker-controlled content through FormatMarkdownAsync and FormatEmbedMarkdownAsync in DiscordChatExporter.Core/Exporting/MessageGroupTemplate.cshtml and render it without HTML entity encoding. The affected fields include message.Content, message.ForwardedMessage.Content, message.ReferencedMessage.Content, embed.Title, embed.Description, field.Name, and field.Value. A Discord webhook or bot can store a script payload in these fields, and the payload executes when a user exports the channel with markdown formatting disabled and opens the resulting HTML, allowing the script to read the export or alter its displayed content. This issue is fixed in version 2.47.2.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-54682 since 06/16/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 2.47.2 eliminates this vulnerability.

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Productinfo

Vendor

• Tyrrrz

Name

• DiscordChatExporter

Version

• 2.47.0
• 2.47.1

Website

• Product: https://github.com/Tyrrrz/DiscordChatExporter/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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