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EUVD-2026-22148

fkie_cve-2021-21337

Products.PluggableAuthService is a pluggable Zope authentication and authorization framework. In Products.PluggableAuthService before version 2.6.0 there is an open redirect vulnerability. A maliciously crafted link to the login form and login functionality could redirect the browser to a different website. The problem has been fixed in version 2.6.1. Depending on how you have installed Products.PluggableAuthService, you should change the buildout version pin to `2.6.1` and re-run the buildout, or if you used `pip` simply do `pip install "Products.PluggableAuthService>=2.6.1".

GHSA-p44j-xrqg-4xrr — URL Redirection to Untrusted Site ('Open Redirect') in Products.PluggableAuthService

Affected: PyPI: Products.PluggableAuthService

### Impact _What kind of vulnerability is it? Who is impacted?_

Open redirect vulnerability - a maliciously crafted link to the login form and login functionality could redirect the browser to a different website.

### Patches _Has the problem been patched? What versions should users upgrade to?_

The problem has been fixed in version 2.6.1. Depending on how you have installed Products.PluggableAuthService, you should change the buildout version pin to `2.6.1` and re-run the buildout, or if you used `pip` simply do `pip install "Products.PluggableAuthService>=2.6.1"`

### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_

There is no workaround. Users are encouraged to upgrade.

### References _Are there any links users can visit to find out more?_

- [GHSA-p44j-xrqg-4xrr](https://github.com/zopefoundation/Products.PluggableAuthService/security/advisories/GHSA-p44j-xrqg-4xrr) - [Products.PluggableAuthService on PyPI](https://pypi.org/project/Products.PluggableAuthService/) - [OWASP page on open redirects](https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html)

### For more information If you have any questions or comments about this advisory: * Open an issue in the [Products.PluggableAuthService issue tracker](https://github.com/zopefoundation/Products.PluggableAuthService/issues) * Email us at [security@plone.org](mailto:security@plone.org)

gsd-2021-21337

PYSEC-2021-45

Affected: PyPI: products-pluggableauthservice