GetPaid < 2.8.55 - Unauthenticated Worldpay Payment Bypass via Insufficient IPN Verification
Priority MEDIUM 60CWE-345Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-345.
Summary
The GetPaid WordPress plugin before 2.8.55 does not verify the authenticity of incoming Worldpay payment notifications, allowing unauthenticated attackers to forge a notification that marks a pending invoice as paid without any payment being made.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0016 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GetPaid (Unknown): 2.8.55
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | GetPaid | before 2.8.55 | 2.8.55 | Patch available | CNA |
- GetPaid VendorUnknown Affected before 2.8.55 Fixed in 2.8.55 Patch available CNA
Remediation
- Fix · CNA GetPaid (Unknown) Fixed in 2.8.55
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12901
- 2026-10-03 Alias added: GHSA-w426-cmgx-r837
References
Sources
- CVE-2026-12901 · CVE Program
- CVE-2026-12901 · NVD
- FIRST EPSS
- GHSA-w426-cmgx-r837 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences