CVE-2026-72887

Net::OAuth::Client versions before 0.32 for Perl allow the service provider to silently downgrade OAuth 1.0a to OAuth 1.0 in getrequesttoken. Passing a callback to the constructor selects OAuth 1.0a. getrequesttoken then revokes that choice when the request token response omits...

CVE-2026-72887

Net::OAuth::Client versions before 0.32 for Perl allow the service provider to silently downgrade OAuth 1.0a to OAuth 1.0 in getrequesttoken. Passing a callback to the constructor selects OAuth 1.0a. getrequesttoken then revokes that choice when the request token response omits...

CVE-2026-72887 Net::OAuth::Client versions before 0.32 for Perl allow the service provider to silently downgrade OAuth 1.0a to OAuth 1.0 in get_request_token

Net::OAuth::Client versions before 0.32 for Perl allow the service provider to silently downgrade OAuth 1.0a to OAuth 1.0 in getrequesttoken. Passing a callback to the constructor selects OAuth 1.0a. getrequesttoken then revokes that choice when the request token response omits...

CVE-2026-72887

Net::OAuth::Client versions before 0.32 for Perl allow the service provider to silently downgrade OAuth 1.0a to OAuth 1.0 in getrequesttoken. Passing a callback to the constructor selects OAuth 1.0a. getrequesttoken then revokes that choice when the request token response omits...

CVE-2026-72887

Net::OAuth::Client for Perl is affected in versions before 0.32. The vulnerability allows a service provider to silently downgrade OAuth 1.0a to OAuth 1.0 during get_request_token due to how oauth_callback_confirmed is handled; a provided callback can cause 1.0a to be discarded, and the access to...

Phabricator: Login CSRF using Twitter OAuth

This bug is related to bug report 774 Log in a user to another account by @dawidczagan as this bug also allows a user to be logged in as the attacker. The main reason is that no state is maintained in the authentication flow. Although the Twitter flow still uses OAuth 1.0A, which has no state...