Release note / Piwigo 16.4.0

bug fixes

16.4.0
Download Piwigo 16.4.0

Released on May 3rd, 2026

md5sum

The list of major changes is described on Piwigo 16.0.0 release note

Bugs fixed

Languages

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Bugs fixed

2555 / Users & Groups

[users] generic user cannot generate password reset link but UI suggests otherwise

2553 / Technical

plugin update through UI may perform the plugin update action of the previous version

2544 / Users & Groups

[users] add user modal is too large and some bad translations

2539 / web API

[API] Set pwg_token automatically for api_key requests

2538 / Technical

[mail] differentitate from and reply-to

2531 / Display

Standard pages conf disappears

2478 / UX

Creation date of API key not visible

2369 / Technical

DivisionByZeroError

796 / web API

API pwg.images.getInfo returns incorrect URLs with $conf['original_url_protection']

GHSA-rr39-mf4j-6594

prevent displaying RAW cookie content

GHSA-jhp4-7f82-8f6q

album photos sort order : check user input before use

GHSA-7r67-9xhq-7p2c

batch manager : check user input

GHSA-7w97-5g4p-xqvv

standard pages config : more robust check on logo file type

GHSA-j9q6-q52g-g8jw

photo upload : make sure SVG files have the appropriate file name extension

GHSA-gphq-34pv-gvf3

install : sanity check for table prefix during install

GHSA-6wj3-7fhw-gfpm

upgrade: SQL injection

Languages

Updated languages

Breton (Brezhoneg)

Catalan (Català)

Czech (Česky)

Danish (Dansk)

German (Deutsch)

Greek (Ελληνικά)

Spanish (Español)

Basque (Euskara)

Persian (فارسی)

French Canadian (Québecois)

French (Français)

Hebrew (עברית)

Icelandic (Íslenska)

Italian (Italiano)

Japanese (日本語)

Korean (한국어)

Norwegian Bokmål (bokmål)

Dutch (Nederlands)

Brazilian Portuguese (Português Brasil)

Russian (Русский)

Serbian (Srpski)

Slovak (Slovensky)

Swedish (Svenska)

Chinese (简体中文)

Traditional Chinese (中文 繁體)

Upgrade

We recommend the automatic upgrade. If you're running version 2.2+, Piwigo will tell you which plugins may be not compatible with Piwigo 16 before upgrade.

Automatic upgrade

If you're running Piwigo 16.x you can also download the 16.x_to_16.4.0.zip archive that contains all new and modified files. Once you have extracted the files, transfer them onto your web server with a FTP client over your Piwigo 16.x installation. No database upgrade is required.

16.x_to_16.4.0.zip

If you are running a version older than 16 and do not want to use the automatic upgrade, then follow the manual upgrade.

Manual Upgrade