Support » Plugin: Contact Form 7 Signature Addon » Signature Uploads with 400 File Permission / IMG SRC does not work

  • Hello,

    When the Signature.png file is created on the server, it is automatically given inaccessible file permission of 400.

    This results in the IMG SRC link “” to fail in emails. I have to manually log into my CPANEL or through FTP and change it each time before it gets auto-deleted.

    I spoke to my web host and they said it is the Plugin that sets it as 400.

    Is there a way to resolve this? The Signature is not usable until it is.

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  • I have answered and solved my own support question:

    This is the file that sets the permissions:


    LINE: 163

    // Writing signature
    if ( $handle = @fopen( $filepath, ‘w’ ) ) {
    fwrite( $handle, $decoded_image );
    fclose( $handle );
    @chmod( $filepath, 0400 ); // Make sure the uploaded file is only readable for the owner process

    With the CHMOD set to 0400, the image does not embed/attach to the email.

    Can this be updated in future versions so that the server permissions do not block the embedded of the signature?

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