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fix(backend): Upgrade outdated password hashes on email logins - #1667

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CarlSchwan merged 1 commit into
nextcloud:mainfrom
solracsf:fix/password-hash-upgrade-email-login
Aug 21, 2026
Merged

fix(backend): Upgrade outdated password hashes on email logins#1667
CarlSchwan merged 1 commit into
nextcloud:mainfrom
solracsf:fix/password-hash-upgrade-email-login

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checkPassword() accepts the user id or the email address, but handed the login name straight to setPassword(), which matches on uid_lower. When a guest with a hashed user id logged in with their email address the update therefore matched no row and the outdated hash stayed in place, so it was re-computed and dropped on every single login.

Use the user id that the lookup already returned.

@solracsf solracsf added bug Something isn't working 3. to review Waiting for reviews labels Aug 16, 2026
checkPassword() accepts the user id or the email address, but handed the
login name straight to setPassword(), which matches on uid_lower. When a
guest with a hashed user id logged in with their email address the
update therefore matched no row and the outdated hash stayed in place,
so it was re-computed and dropped on every single login.

Use the user id that the lookup already returned.

Signed-off-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>
@CarlSchwan
CarlSchwan force-pushed the fix/password-hash-upgrade-email-login branch from 62f1329 to 7d26801 Compare August 21, 2026 08:26
@CarlSchwan
CarlSchwan merged commit 16bf594 into nextcloud:main Aug 21, 2026
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@solracsf
solracsf deleted the fix/password-hash-upgrade-email-login branch August 21, 2026 09:13
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