Tyrrrz DiscordChatExporter up to 2.47.1 Html Markdown Visitor HtmlMarkdownVisitor.cs VisitEmojiAsync alt/title HTML injection

Summaryinfo

A vulnerability was found in Tyrrrz DiscordChatExporter up to 2.47.1. It has been declared as problematic. This affects the function VisitEmojiAsync of the file DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs of the component Html Markdown Visitor. The manipulation of the argument alt/title results in HTML injection. This vulnerability is identified as CVE-2026-54681. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Tyrrrz DiscordChatExporter up to 2.47.1. Affected is the function VisitEmojiAsync of the file DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs of the component Html Markdown Visitor. The manipulation of the argument alt/title with an unknown input leads to a html injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

DiscordChatExporter saves Discord chat logs to a file. Prior to 2.47.2, the VisitEmojiAsync method in DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs interpolates emoji.Name into the alt attribute and emoji.Code into the title attribute without HTML entity encoding. This affects HTML exports regardless of the markdown setting. Discord's current custom emoji name validation normally excludes attribute-breaking characters, but tampered offline input, a relaxed upstream validation rule, or another future metadata source can inject an HTML attribute and execute script when a user opens the export. This issue is fixed in version 2.47.2.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-54681 since 06/16/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

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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