Error while reading the database: Invalid number value

[wjjessen]

I have a KeePass 2 database that is stored on NextCloud and is accessed with KeePassXC on my MacBook. Using the NextCloud app KeeWeb (v1.8.2), I created a new record in the database. Now KeePassXC is unable to open the file, displaying the following in red when the password and key file are provided:

Error while reading the database: Invalid number value

Database format: KeePass 2
KeePass file version: 3.1
Database generator: KbdxWeb
Outer encryption: AES
Compressed: yes
Transform rounds: 600000
Inner encryption: Salsa20
Number of entries: 332

Although KeePassXC cannot open the database, MacPass (v0.7.9) and Strongbox (v1.11.0) both open it without issue. I can also open the kdbx file with KeeWeb on NextCloud.

Debug Info

KeePassXC - Version 2.4.3
Revision: 5d6ef0c

Qt 5.12.3
Debugging mode is disabled.

Operating system: macOS High Sierra (10.13)
CPU architecture: x86_64
Kernel: darwin 17.7.0

Enabled extensions:

• Auto-Type
• Browser Integration
• SSH Agent
• KeeShare (signed and unsigned sharing)
• YubiKey
• TouchID

Cryptographic libraries:
libgcrypt 1.8.4

[droidmonkey]

This indicates that a non-number was stored where a number was expected in the inner XML.

[wjjessen]

After testing, this happens every time a new record is created in the NextCloud app KeeWeb (v1.8.2), although it's not the new record that's the issue. I can open the kdbx file with MacPass and delete the new record, but KeePassXC will still not open the file and reports the same error (invalid number value).

[droidmonkey]

Are you capable of providing an example database that is broken by KeeWeb?