email address not supporting international domain names #1615

New Issue

MrUnknownDE · 2026-04-06T02:04:54+02:00

MrUnknownDE commented

2026-04-06 02:04:54 +02:00

Originally created by @Sasaxxxx on 5/7/2023

Subject of the issue

Problem starts when using international domain names. fx. xxxx@xn--gr-wla37a.com (xxxx@gršć.com)
When user account is created using xxxx@gršć.com (in version of VaultWarden 1.25.2), now VaultWarden v- 1.28.1 do not support this email address.
When this email address is typed in the VaultWarden Web Vault, Error message is shown: " Input is not an email address."

Deployment environment

Error message: "Generation Failed"

vaultwarden version: 1. 28.1

Install method: Docker on Synology server
Clients used:
WebVault, desktop, IOS
Reverse proxy and version:
MySQL/MariaDB or PostgreSQL version:
Other relevant details:

Steps to reproduce

account created with username/email: xxxx@gršć.com (v.1.25.1)
2.. version updated to 1.28.1
IOS app updated, desktop app updated, edge extension updated (since release of 1.25.1)
now when user name/email: xxxx@@gršć.com is used, it is been converted to xxxx@xn--gr-wla37a.com causing error message in WebVault: " Input is not an email address." or in case of App's, no login possible.

Expected behaviour

when xxxx@gršć.com international domain name is used to create account, domain in account name should not be automatically converted to xxxx@xn--gr-wla37a.com.

Actual behaviour

LogIn on VaultWarden Web Vault. Email: xxxx@@gršć.com
error message: "Input is not an email address."

Troubleshooting data

*Originally created by @Sasaxxxx on 5/7/2023*   ### Subject of the issue Problem starts when using international domain names. fx. xxxx@xn--gr-wla37a.com (xxxx@gršć.com) When user account is created using xxxx@gršć.com (in version of VaultWarden 1.25.2), now VaultWarden v- 1.28.1 do not support this email address. When this email address is typed in the VaultWarden Web Vault, Error message is shown: " Input is not an email address." ### Deployment environment  Error message: "Generation Failed"    * vaultwarden version: 1. 28.1  * Install method: Docker on Synology server * Clients used:  * WebVault, desktop, IOS * Reverse proxy and version:  * MySQL/MariaDB or PostgreSQL version:  * Other relevant details: ### Steps to reproduce  1. account created with username/email: xxxx@gršć.com (v.1.25.1) 2.. version updated to 1.28.1 3. IOS app updated, desktop app updated, edge extension updated (since release of 1.25.1) 4. now when user name/email: xxxx@@gršć.com is used, it is been converted to xxxx@xn--gr-wla37a.com causing error message in WebVault: " Input is not an email address." or in case of App's, no login possible. ### Expected behaviour  1. when xxxx@gršć.com international domain name is used to create account, domain in account name should not be automatically converted to xxxx@xn--gr-wla37a.com. 2. ### Actual behaviour  1. LogIn on VaultWarden Web Vault. Email: xxxx@@gršć.com 2. error message: "Input is not an email address." ### Troubleshooting data

MrUnknownDE closed this issue

2026-04-06 02:04:54 +02:00

MrUnknownDE added the Third party troubleshooting Third party Third party Third party Third party Third party troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting troubleshooting labels 2026-04-06 02:04:56 +02:00

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Reference: github/vaultwarden#1615