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CVE-2026-119036unknown

Business::GoCardless versions before 1.01 for Perl allow memory exhaustion by flattening legacy webhook payloads before checking their signature

Impact

Business::GoCardless for Perl versions before 1.01 may be vulnerable to memory exhaustion via legacy webhook payloads. An attacker with access to send webhooks can potentially exhaust memory. The weakness is due to allocation of resources without limits or throttling.

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 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.

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-2026-119036

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-770 ↗

CWE-770 Allocation of Resources Without Limits or Throttling

CPANSec

Related →
Contributing organizations · 1
CPANSec

Assigning organization

2026-10-30

What changed

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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