[GH-ISSUE #549] Mkcert Certificates causes flutter cli tools to throw tls error #325

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opened 2026-02-25 22:33:06 +03:00 by kerem · 3 comments

kerem commented

2026-02-25 22:33:06 +03:00

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Originally created by @e-reifer on GitHub (Aug 21, 2023).
Original GitHub issue: https://github.com/FiloSottile/mkcert/issues/549

Environment

Operating system (including version): macOS Ventura 13.4.1
mkcert version (from mkcert -version): v.1.4.4
Server (where the certificate is loaded):
Client (e.g. browser, CLI tool, or script): CLI (bin/bash)

What you did

What went wrong

Mkcerts prohibits the flutter cli to be able to get packages as the terminal browser uses the system-wide certitifacate generated by mkcert. I have not found a way to disable this.

flutter doctor shows this:
[!] Network resources ✗ A cryptographic error occurred while checking "https://pub.dev/": Handshake error in client You may be experiencing a man-in-the-middle attack, your network may be compromised, or you may have malware installed on your computer.

flutter pub get shows TLS error:

Got TLS error trying to find package args at https://pub.dev

Any help is appreciated

Originally created by @e-reifer on GitHub (Aug 21, 2023). Original GitHub issue: https://github.com/FiloSottile/mkcert/issues/549 ## Environment * Operating system (including version): macOS Ventura 13.4.1 * mkcert version (from `mkcert -version`): v.1.4.4 * Server (where the certificate is loaded): * Client (e.g. browser, CLI tool, or script): CLI (bin/bash) ## What you did  ## What went wrong  Mkcerts prohibits the flutter cli to be able to get packages as the terminal browser uses the system-wide certitifacate generated by mkcert. I have not found a way to disable this. `flutter doctor` shows this: ` [!] Network resources ✗ A cryptographic error occurred while checking "https://pub.dev/": Handshake error in client You may be experiencing a man-in-the-middle attack, your network may be compromised, or you may have malware installed on your computer. ` `flutter pub get` shows TLS error: `Got TLS error trying to find package args at https://pub.dev` Any help is appreciated

kerem closed this issue

2026-02-25 22:33:06 +03:00

kerem commented

2026-02-25 22:33:07 +03:00

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Owner

@e-reifer commented on GitHub (Sep 4, 2023):

Could resolve it myself with the help of chatgpt. Mkcert was just a side effect. The real cause was me using dnsmasq service the unintentionally redirected all "pub.dev" results to localhost while using mkcert's certificate.

@e-reifer commented on GitHub (Sep 4, 2023): Could resolve it myself with the help of chatgpt. Mkcert was just a side effect. The real cause was me using dnsmasq service the unintentionally redirected all "pub.dev" results to localhost while using mkcert's certificate.

kerem commented

2026-02-25 22:33:07 +03:00

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Owner

@coskuncay commented on GitHub (Feb 1, 2024):

hi @e-reifer , so how did you solve it ?

@coskuncay commented on GitHub (Feb 1, 2024): hi @e-reifer , so how did you solve it ?

kerem commented

2026-02-25 22:33:07 +03:00

Author

Owner

@e-reifer commented on GitHub (Feb 1, 2024):

I've checked the dnsmasq.conf file /opt/homebrew/etc/dnsmasq.conf and deleted a line similar to address=/.dev/127.0.0.1

@e-reifer commented on GitHub (Feb 1, 2024): I've checked the dnsmasq.conf file `/opt/homebrew/etc/dnsmasq.conf` and deleted a line similar to `address=/.dev/127.0.0.1`

kerem referenced this issue

2026-02-25 22:33:31 +03:00

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