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 (Perl, before 0.32) silently downgrades OAuth 1.0a to OAuth 1.0 in get_request_token when the provider omits oauth_callback_confirmed, dropping oauth_verifier with no warning. This exposes affected applications to OAuth 1.0 session fixation: an attacker obtains a request token,...