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.
CVSS
No CVSS.
References
Configurations
No configuration.
History
30 Oct 2026, 13:18
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-10-30 13:18
Updated : 2026-10-30 17:13
NVD link : CVE-2026-119037
Mitre link : CVE-2026-119037
CVE.ORG link : CVE-2026-119037
JSON object : View
Products Affected
No product.
CWE
CWE-347
Improper Verification of Cryptographic Signature
