CPANSA-Business-GoCardless-2026-119036: 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 allow memory exhaustion by flattening legacy webhook payloads before checking their signature.
A webhook body with a top-level "payload" key is verified as a legacy webhook. To rebuild the signed string, the payload is flattened into one key and value pair per leaf, each key carrying the full path to that leaf, and the pairs are then encoded, sorted and joined. A long key holding a long array costs memory proportional to the key length times the array length.
A remote attacker can exhaust memory in the process receiving webhooks with a single request that carries no valid signature.
Vulnerabilities
CVE-2026-119036
Vulnerability DescriptionBusiness::GoCardless versions before 1.01 for Perl allow memory exhaustion by flattening legacy webhook payloads before checking their signature.
A webhook body with a top-level "payload" key is verified as a legacy webhook. To rebuild the signed string, the payload is flattened into one key and value pair per leaf, each key carrying the full path to that leaf, and the pairs are then encoded, sorted and joined. A long key holding a long array costs memory proportional to the key length times the array length.
A remote attacker can exhaust memory in the process receiving webhooks with a single request that carries no valid signature.
| Weakness | CWE-770 : Allocation of Resources Without Limits or Throttling |
|---|
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-2026-119036 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-business-gocardless-2026-119036.json - https://metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes external
https://metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes - CVE-2026-119036 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-119036
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/