What is CVE-2018-25093?

A critical improper access control bug in Vaerys-Dawn DiscordSailv2's Tag Handler up to 2.10.2, fixed in 2.10.3.

Is my Discord server affected by CVE-2018-25093?

Only if running vulnerable Vaerys-Dawn DiscordSailv2. Check version and upgrade ASAP.

How do I fix CVE-2018-25093?

Update to 2.10.3 via commit cc12e0be82a5d05d9f359ed8e56088f4f8b8eb69, or disable tags.

CVE-2018-25093: Discord Bot's Tag Handler Lets Hackers Slip Past Guards

What if your Discord bot's helpful tags are actually backdoors for troublemakers? CVE-2018-25093 hits Vaerys-Dawn DiscordSailv2 hard, turning a simple feature into a critical access control nightmare.

theAIcatchup Apr 08, 2026 4 min read

Code snippet highlighting CVE-2018-25093 vulnerability in Discord bot tag handler

⚡ Key Takeaways

CVE-2018-25093 exploits Tag Handler in Vaerys-Dawn DiscordSailv2 for unauthorized access—critical risk. 𝕏
Patch immediately to 2.10.3; self-hosted bots demand vigilance. 𝕏
Echoes past Discord flaws: prioritize security over features in custom bots. 𝕏

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theAIcatchup

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#CVE-2018-25093 #Discord bot vulnerability #Vaerys-Dawn DiscordSailv2 #improper access controls

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Originally reported by NVD Vulnerabilities

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