> Source: [sk114458](https://support.checkpoint.com/results/sk/sk114458)

# sk114458 - Mobile Access Web Form SSO login fails if the password contains special characters

| Property | Value |
|----------|-------|
| Solution ID | sk114458 |
| Date Created | 2016-11-10 |
| Last Modified | 2018-12-10 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * Mobile Access Web Form SSO login fails if the password contains special characters (e.g., exclamation sign "!", asterisk "\*", plus "+", minus "-", etc.).

* Users are able to authenticate to Web Applications by manually entering their credentials in the login page.

* Mobile Access Web Form SSO login fails after upgrading R77.30 gateway to one of the following Jumbo takes - 161,162,164,165,171,172,184,185,189.

## Cause

When using Web Form SSO, passwords that contain special characters are URL-encoded twice - first, the special character is encoded as "`%XX`", and then the percent "`%`" character is also encoded as "`%25`", which produces the "`%25XX`".

Examples:

* password "`test!`" instead of being encoded once to "`test%21`" is encoded again to "`test%2521`" before being sent to the server
* password "`test*`" instead of being encoded once to "`test%2A`" is encoded again to "`test%252A`" before being sent to the server

## Solution

This solution requires authentication. Please log in to view the full solution.

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