CVE-2026-54681

MEDIUM 4.1

DiscordChatExporter: HTML attribute injection via unescaped emoji name in HTML export

CVSS Score

4.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	tyrrrz
Product	discordchatexporter
Published	Aug 21, 2026
Last Updated	Aug 21, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Tyrrrz / DiscordChatExporter

< 2.47.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc github.com: https://github.com/Tyrrrz/DiscordChatExporter/pull/1544 github.com: https://github.com/Tyrrrz/DiscordChatExporter/commit/f4d1e630f7f27120c3be4320d92cc8b932e78688 github.com: https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/2.47.2