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On April 28, 2022, we released a new version of Apigee Edge for Private Cloud.
**Note:** This version will be supported until April 28, 2023.
> [!NOTE]
> **Note about the Apache Log4j vulnerability:**
>
>
>
> Edge for Private Cloud's default configuration contains Log4j 2 but
> is not vulnerable to Log4j 2
> ([CVE-2021-44228](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44228)).
>
> Likewise, Edge for Private Cloud is not affected by the
> related vulnerability in Apache Log4j-1.x, which is shipped with ZooKeeper. That
> vulnerability requires a
> specific configuration of Log4j-1.x that Edge for Private Cloud
> does not ship as a default configuration. Therefore the vulnerability is not
> exploitable in Edge for Private Cloud.
> [!NOTE]
> For more information, see the following resources:
>
> - *[Edge for Private Cloud 4.51.00
> documentation](https://docs.apigee.com/private-cloud/v4.51.00)*
> - *Questions or issues?* Contact [Apigee Edge Support](https://docs.apigee.com/api-platform/troubleshoot/support)
> - *[Edge for Private Cloud support timeline](https://docs.apigee.com/release/apigee-edge-release-process#apigee-edge-for-private-cloud-support-timeline)*
> - *Release notifications* : See [Get Apigee Edge release notifications](https://docs.apigee.com/release/get-release-notifications)
## Update procedure
Updating this release will update the components in the following list of RPMs:
- edge-gateway-4.51.00-0.0.60167.noarch.rpm
- edge-management-server-4.51.00-0.0.60167.noarch.rpm
- edge-message-processor-4.51.00-0.0.60167.noarch.rpm
- edge-postgres-server-4.51.00-0.0.60167.noarch.rpm
- edge-qpid-server-4.51.00-0.0.60167.noarch.rpm
- edge-router-4.51.00-0.0.60167.noarch.rpm
- edge-management-ui-4.51.00-0.0.20031.noarch.rpm
- apigee-mtls-consul-4.51.00-0.0.20150.noarch.rpm
- apigee-mtls-4.51.00-0.0.20242.noarch.rpm
- apigee-service-4.51.00-0.0.1434.noarch.rpm
You can check the RPM versions you currently have installed, to see if they
need to be updated, by entering:
```
apigee-all version
```
To update your installation, perform the following procedure on the Edge nodes:
1. On all Edge nodes:
1. Clean the Yum repos:
```
sudo yum clean all
```
2. Download the latest Edge 4.51.00 `bootstrap_4.51.00.sh` file to `/tmp/bootstrap_4.51.00.sh`:
```
curl https://software.apigee.com/bootstrap_4.51.00.sh -o /tmp/bootstrap_4.51.00.sh
```
3. Install the Edge 4.51.00 `apigee-service` utility and dependencies:
```
sudo bash /tmp/bootstrap_4.51.00.sh apigeeuser=uName apigeepassword=pWord
```
where uName and pWord are the username and password you received from Apigee.
If you omit pWord, you will be prompted to enter it.
4. Use the `source` command to execute the apigee-service.sh script:
```
source /etc/profile.d/apigee-service.sh
```
2. On all Edge nodes, execute the `update.sh` script for the edge process:
```
/opt/apigee/apigee-setup/bin/update.sh -c edge -f configFile
```
3. If you are using the New Edge experience, execute the following command:
```
/opt/apigee/apigee-setup/bin/update.sh -c ue -f configFile
```
4. If you are using Apigee mTLS, follow the procedure described in [Upgrade Apigee mTLS](https://docs.apigee.com/private-cloud/v4.51.00/mtls-upgrade). For more information, see [Introduction to Apigee
mTLS](https://docs.apigee.com/private-cloud/v4.51.00/mtls-intro).
## Security issues fixed
The following is a list of known security issues that have been fixed in this release.
To avoid these issues, install the latest version of Edge Private Cloud.
| Issue ID | Description |
|---|---|
| 162303081 162744120 | A security issue has been fixed for non-generic responses that could have leaked configuration data. |
## Changes to
[supported software](https://docs.apigee.com/release/supported-software#apigeeedgeforprivatecloudsupportedversions)
There are no changes to supported software in this release.
## Deprecations and retirements
There are no new deprecations or retirements in this release.
## New features
There are no new features in this release.
## Bug fixes
This section lists the Private Cloud bugs that were fixed in this release.
| Issue ID | Description |
|---|---|
| 193450469 | **Requests to Python callout in sharedflow were failing due to a `java.lang.NoClassDefFoundError`** This has been fixed. |
| 195356975 | **Deploying a proxy was taking too long** This has been fixed. |
| 184389140 | **OASValidation was returning 500 status when validation failed** OASValidation now returns the correct 400 status. |
| 143970302 | **Empty JSON parameter was causing a `steps.jws.GenerationFailed` error** This has been fixed. |
| 172664689 | **Added proper log entries for statistics collector custom variables population in Zookeeper** |
| 190755743 | **SSO Error handling was not returning correct error messages** This has been fixed. |
| 174850082 | **Proxy revision was returning a 400 error when used as a target with `LocalTargetConnection`** This has been fixed |
| 195619555 | **VerifyJWT policy was not allowing the `use:sig` attribute in JSON Web Key Set public key** This has been fixed. |
| 180576871 | **DeleteOAuthV2Info policy was failing to remove the access token** This has been fixed. |
| 195298618 | **Made `AccessControlAction` case-insensitive** |
| 73962564 | **Converted monit restart command to a configuration so it can be overridden by using configuration `monit_restart_program`** |
| 218520309 | **Audited and updated system for the Apigee Edge UI based on the latest Content Security Policy standards** |
| 204745781 | **The apigee-service RPM no longer depends on edge-gateway** |
| 202551776 | **apigee-mtls-consul is now compatible with Edwards Curve 25519 encryption algorithm** |
| 123354410 | **JWT policy was converting int datatype to double** This has been fixed. |
| 182386219 | **Upgraded third party library xmlbeans-2.4.0 to xmlbeans-3.1.0** |
## Known issues
See [Known issues with Edge for Private Cloud](https://docs.apigee.com/release/known-issues#private-cloud)
for a complete list of known issues.