CVE-2026-119037
Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook secret is undef or empty. signature_val
CVSS
7.5
Alta
EPSS
0.2%
p11
KEV
—
Exploit Today
3
0-100
Publicado: 30 de out. de 2026 · Última mod.: 6 de nov. de 2026 · CWE-347
Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook secret is undef or empty. signature_valid uses each configured secret as the HMAC key, and nothing rejects undef or an empty string, both of which Digest::SHA treats as an empty key. A secret read from an unset environment variable, or an empty entry in a list of rotated secrets, is used as is. A remote attacker can sign a forged webhook with an empty key and have it accepted as sent by GoCardless.