CVE-2026-54682 DiscordChatExporter: Stored XSS in HTML export when markdown formatting is disabled

What is CVE-2026-54682?

CVE-2026-54682 is a high-severity cross-site scripting vulnerability in Tyrrrz DiscordChatExporter, published on 21 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-79

Which versions are affected by CVE-2026-54682?

How do I fix CVE-2026-54682?

No fix has been published for CVE-2026-54682 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-54682 being exploited?

There is no known exploitation of CVE-2026-54682 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8qrv-mmch-fr9c.