CVE-2026-119037
Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook…
- Risk score
- 50/100
- CVSS
- 7.5 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 30 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 environm…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.01 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.5 high
- Remotely exploitable without logging in
References
Original 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.
Last activity 30 Oct 2026. Patch Forecast updates every hour.