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Vulnerability record · CVE-2026-54682 · published 21 August 2026

CVE-2026-54682: Cross-site scripting vulnerability

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.

8.2 CVSS 3.1 High EPSS 0.20% · top 91.5% CWE-79 · Cross-site scripting Received
8.2CVSS 3.1 base score
0.20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
25 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-54682), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.