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VulnerabilityPublished

CVE-2026-119036: Business::GoCardless versions before 1.01 for Perl allow memory exhaustion by flattening legacy

Source GCVE Database

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Authoritative record:CVE-2026-119036· High

Not known to be exploited : upgrade to 1.01 soon.

Data as of 30 Oct 2026, 17:03 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 1.01

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Business-GoCardless (Perl module) to 1.01.

Affected software

ProductAffectedFixed in
Business-GoCardlessAffected
  • <1.01
Fixed in
  • 1.01
CPANBusiness-GoCardlesspkg:cpan/Business-GoCardlessOther threatsAffected
  • <1.01
Fixed in
  • 1.01

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, consider implementing network-level protections to limit or validate incoming webhook payload sizes and rates.

Description

Business::GoCardless versions before 1.01 for Perl contain a vulnerability that allows remote attackers to exhaust memory by sending specially crafted legacy webhook payloads. The flaw arises because the software flattens the payload into key-value pairs before verifying the webhook signature, leading to memory exhaustion proportional to the payload size. This can be triggered with a single request carrying no valid signature.

References

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