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CVE-2026-119037unknown

Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook secret is undef or empty

Impact

Business::GoCardless for Perl versions before 1.01 accept forged webhooks when a configured webhook secret is empty or undefined, allowing a remote attacker to sign a forged webhook with an empty key. The weakness is due to improper verification of cryptographic signatures. This affects versions less than 1.01.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

Upgrade to Business-GoCardless 1.01 or later.

CPANSec guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Vendor not supplied · CPANSec

Business-GoCardless

1 range
CPANSec version evidence

Package identity

pkg:cpan/Business-GoCardless

Identity supplied by CPANSec. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 1.01

custom versions

unaffected

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119037

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-347 ↗

CWE-347 Improper Verification of Cryptographic Signature

CPANSec

Related →
Contributing organizations · 1
CPANSec

Assigning organization

2026-10-30

What changed

Follow changes
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Large field values are marked as truncated previews. Original source snapshots remain retained.

References

1 sources
metacpan.org/release/LEEJO/Business-GoCardless-1.01/changes
release-notesCPANSec