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Published Release Notes

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This documentation is for non-current versions of Pega Platform. For current release notes, go here.

Condition builder enhancements

Valid from Pega Version 8.5

To enhance the precision of condition builder in both App Studio and Dev Studio, the new instances include comparator helps you specify the number of field group and field group list instances to which a when rule applies. In addition, a search option that returns results on keypress helps you easily look for existing values.

For more information, see Create conditions in an enhanced condition builder (8.5), Defining conditions in the condition builder.

New JWT access token format: Authorized Access Token

Valid from Pega Version 8.5

Pega Platform™ is changing from using opaque tokens to using JSON Web (JWT) tokens and the JWT access token format: Authorized Access Token (AAT). An AAT enables a client application to validate the server for user permissions and authorizes a specific application to access specific parts of a user’s data.

The major benefits to using the JWT format are:

  • The JWT is a self-contained token that has authentication information, expire time information, and other user-defined claims digitally signed.
  • A single token can be used with multiple applications.
  • The tokens are short-lived and can minimize damage if transport security is compromised, as the token signature is verified.
  • As the token is verified with the signature, there is no need to verify against a database, thus reducing latency (usually important for Web APIs).

For more information, see Understanding authorized access tokens.

Improvements to OAuth 2.0 Services with Token Introspection Service and Token Denylist Service

Valid from Pega Version 8.5

Increase the security of user sessions by using the newly supported Token Introspection and Denylist services for OAuth 2.0.

Token Introspection service

Use the Token Introspection service to validate JSON Web Tokens (JWT). The Token Introspection service requires authentication. 

Pega now uses OAuth 2.0 access tokens called Authorized Access Tokens (AAT). 

Token Introspection service endpoint

The Token Introspection service endpoint provides the information about the status of access token and refresh token. Token introspection can be used to validate if a given token is still active or inactive. The token introspection endpoint determines whether the token is valid. The status indicates whether an access token or refresh token is valid or invalid: 

  • Valid tokens have the “active”:true status
  • Invalid tokens have the “active” :false status.

The inactive status can also be due to revocation. 

Token Denylist service

You can add tokens to the deny list in cases where suspicious activity might have occurred. The Token Denylist service provides a method for denying user access to the application by revoking the user's access token. This service can prevent a token from being used more than the specified number of times, which can be helpful in preventing replay attacks. Stolen tokens should be revoked using this service. A GET API is also available to get the list of denied tokens.

Keys endpoint

Pega Platform™ is changing from using opaque tokens to JSON Web (JWT) tokens. If this JWT is used by any other system, the public key is needed for signature verification. A new endpoint is exposed to provide these public keys in JWK format: https://host:port/prweb/api/oauth2/v1/token/keys.

 

For more information, see OAuth 2.0 Management Services.

Enhanced refresh token strategy

Valid from Pega Version 8.5

You now have more precise control over your refresh token expiration strategy. When a refresh token is enabled, you can choose to set its initial expiration based on the value provided by the IDP. The refresh token expiry can be derived from IDP’s session timeout when SSO is used with external IDP for user authentication in the authorization code grant flow. You can also specify a separate refresh token expiration strategy based on your use-case. 

These can be configured in the OAuth2 Client registration rule form.

For more information, see Enhanced refresh token strategy.

Enhancements to token lifetime limits

Valid from Pega Version 8.5

Pega Platform™ uses OAuth 2.0 authorization codes, access tokens, and refresh tokens to provide flexible token-based security for applications. Expiration settings for these codes and tokens now adhere to certain strict value range based on industry leading practices. For example, the lifetime specified for the authorization code must be in the range 1-600 seconds.

These can be configured in the OAuth2 Client registration rule form.

For more information, see OAuth 2.0 Management Services.

Support for nested Declare Trigger rules

Valid from Pega Version 8.5

Pega Platform™ now supports nested Declare Trigger rules so that you can conveniently create correlations between actions in your case types. Declare Triggers rules invoke an action when a specified event takes place in a case type. You can now design more complex scenarios faster by nesting more Declare Trigger rules that work in the context of running another Declare Trigger rule. For example, when a case participant changes a postal code in their personal details, a Declare Trigger rule runs and a respective customer service representative (CSR) receives an email. After the CSR receives the email, a nested Declare Trigger rule runs and your application creates a document with the updated personal details and attaches it to the case.

For more information, see Develop applications faster with nested Declare Trigger rules (8.5), Declare Trigger rules.

Support for validations in Declare Expression rules

Valid from Pega Version 8.5

Pega Platform™ now correctly evaluates validations on target properties in Declare Expression rules. As a result, any validations defined on properties that have Declare Expression rules in previous releases, now work correctly. 

Upgrade impact

Any unintended validations on properties that have configured Declare Expression rules, both default and user-defined, might cause issues in an application upon saving work objects and data objects that refer to Declare Expression rules.

What steps are required to update the application to be compatible with this change? 

If you experience issues when saving objects, debug your application by setting the declareexp/target/validation/disable dynamic system setting to true. If your application works correctly after the change, it means that validations on Declare Expressions cause the issues. For your application to work correctly, analyze the log files and remove any unintended validations.

For more information, see Declare Expression rules.

Improving basic access control

Valid from Pega Version 8.5

Pega Platform™ has implemented a new basic access control (BAC) to protect your application from unauthorized server calls from otherwise authenticated users.

For more information, see Access Control Checks.

Upgrade impact

After you upgrade to Pega 8.5, all the functionality in the model configurations that use auto-generated controls and actions continues to work as before. However, you must secure any customized JavaScript in your application layer that makes AJAX (server) calls  by using registration or encryption mechanisms.

What steps are required to update the application to be compatible with this change?

After upgrade, to migrate custom JavaScript functionality, see Access Control Checks.

Enabling security policies now requires current password

Valid from Pega Version 7.1.3

As part of Pega’s initiative to protect against malicious attacks, the change password dialog has been enhanced.  When Security Policies have been enabled for your system, new users or those with expired passwords will now be prompted for both their existing password as well as their desired new password.

For more details, review the Designer Studio > System > Settings > Security Policies landing page.

Add custom HTTP response headers in your application

Valid from Pega Version 7.2.1

The Pega 7 Platform supports the addition of custom security HTTP headers that are supported by your browser. For example, you can now create custom X-Frame-Options, X-XSS-Protection, and Strict-Transport-Security headers. These headers improve the security of your application against client-based attacks.

For more information, see Creating a custom application header

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