CPANSA-Business-GoCardless-2026-119037: Business-GoCardless vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-10-30T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-10-30T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | Severity | ||
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
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.
Vulnerabilities
CVE-2026-119037
Vulnerability DescriptionBusiness::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.
| Weakness | CWE-347 : Improper Verification of Cryptographic Signature |
|---|
Product status
Known affected
| Product | Score | ||||
|---|---|---|---|---|---|
| Business-GoCardless less than 1.01 |
|
Fixed
- Business-GoCardless greater than or equal 1.01
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-Business-GoCardless-2026-119037 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-business-gocardless-2026-119037.json - https://metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes external
https://metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes - CVE-2026-119037 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-119037
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Fri Oct 30 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/