Vulnerability · Published Aug 21, 2026 · Assigned by GitHub_M

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

High 8.2

In plain English

A high-severity cross-site scripting in DiscordChatExporter from Tyrrrz. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.2%top 90.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Tyrrrz	DiscordChatExporter	< 2.47.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References

https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-8qrv-mmch-fr9c x_refsource_CONFIRM
https://github.com/Tyrrrz/DiscordChatExporter/pull/1545 x_refsource_MISC
https://github.com/Tyrrrz/DiscordChatExporter/commit/5632d6c3867d2f79cba9578056c98caee4377c1b x_refsource_MISC
https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/2.47.2 x_refsource_MISC