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Bug #77113 SQLSTATE[HY000] [2054] The server requested authentication method unknown to th
Submitted: 2018-11-06 10:49 UTC Modified: 2020-10-28 12:12 UTC
Avg. Score:4.5 ± 0.8
Reproduced:12 of 12 (100.0%)
Same Version:6 (50.0%)
Same OS:1 (8.3%)
From: Destroy666 at interia dot pl Assigned: nikic (profile)
Status: Closed Package: PDO MySQL
PHP Version: 7.2.11 OS: Alpine/Stretch FPM Docker image
Private report: No CVE-ID: None
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 [2018-11-06 10:49 UTC] Destroy666 at interia dot pl
In versions 7.2.4-7.2.10 the connection worked fine, but after upgrading I get the authentication method error that existed in earlier versions that didn't support MySQL 8 again.

Expected result:
The PDO authentication method should work correctly with MySQL 8.

Actual result:
SQLSTATE[HY000] [2054] The server requested authentication method unknown to the client


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 [2018-11-16 17:12 UTC] nog76 at gmx dot de
I have exact the same issue, but running on Debian 9.6
After upgrading from PHP 7.2.10 to 7.2.11 most of my applications are getting this error message.
Btw. same behaviour with PHP 7.2.12
 [2018-11-18 17:46 UTC] nog76 at gmx dot de
Found the reason here:

This is related to commit php/php-src@d6e81f0 ( which was later reverted by php/php-src@03740ef (

So the current workaround is to change back all mysql-database-passwords to mysql_native_password:
ALTER USER 'mysqlUsername'@'localhost' IDENTIFIED WITH mysql_native_password BY 'mysqlUsernamePassword';
 [2020-10-28 12:12 UTC]
-Status: Open +Status: Closed -Assigned To: +Assigned To: nikic
 [2020-10-28 12:12 UTC]
Support for caching_sha2_password auth has re-landed in PHP 7.4, so this issue should be resolved since then.
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