Wompi WordPress plugin accepts forged payment notifications
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
The Payment Integration Wompi WordPress plugin through 4.0.1 does not verify incoming payment notifications on a stock install. Its checksum is keyed on a merchant secret that stays empty until it is configured manually, which is CWE-287 (improper authentication). An unauthenticated remote attacker can forge a notification and mark an arbitrary order as paid. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The Payment Integration Wompi WordPress plugin through 4.0.1 does not verify the authenticity of incoming payment notifications on a stock install, because the callback's checksum is keyed on a merchant secret that is empty until it is manually configured, allowing an unauthenticated attacker to forge a notification and mark an arbitrary order as paid.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 | Payment Integration Wompi | up to 4.0.1 | — | No fix listed | CNA |
- Payment Integration Wompi VendorUnknown Affected up to 4.0.1 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Payment Integration Wompi.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-27 Threatist record created from CVE-2026-103312
- 2026-10-27 Alias added: GHSA-f39h-p64c-xrvv
- 2026-10-28 CVSS score added · CISA ADP
- 2026-10-28 Weakness changed · CISA ADP
- 2026-10-28 CISA SSVC decision points changed
References
Sources
- CVE-2026-103312 · CVE Program
- CVE-2026-103312 · NVD
- FIRST EPSS
- GHSA-f39h-p64c-xrvv · 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