Eurobank WooCommerce Payment Gateway Allows Unauthenticated Order Forgery
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 · CNA. Fix status from CNA. Impact type from CWE-345.
Summary
The Eurobank WooCommerce Payment Gateway plugin through 2.1.1 does not verify that a payment-confirmation request comes from the payment provider (CWE-345). The secret that would authenticate these requests ships empty by default, so an unauthenticated attacker can mark any pending order as paid or force any order into a failed status. The CVSS 3.1 base score is 5.3 (MEDIUM). CISA has not added it to KEV, but the references include an exploit link.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The Eurobank WooCommerce Payment Gateway WordPress plugin through 2.1.1 does not verify that a payment-confirmation request genuinely originates from the payment provider, and ships with the secret that would authenticate it empty by default, allowing unauthenticated attackers to mark any pending order as paid, and to force any order into a failed status without any secret at all.
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 | Eurobank WooCommerce Payment Gateway | up to 2.1.1 | — | No fix listed | CNA |
- Eurobank WooCommerce Payment Gateway VendorUnknown Affected up to 2.1.1 Fixed in — No fix listed CNA
Remediation
No fixed version is listed for this plugin. Until one is available, set a strong secret for the payment-confirmation callback so it is no longer empty, and check orders marked as paid against records from the payment provider.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-26 Threatist record created from CVE-2026-103300
- 2026-10-26 Weakness changed · CISA ADP
- 2026-10-26 CISA SSVC decision points changed
- 2026-10-27 Alias added: GHSA-gmpq-vcj6-g4r2
References
Sources
- CVE-2026-103300 · CVE Program
- CVE-2026-103300 · NVD
- FIRST EPSS
- GHSA-gmpq-vcj6-g4r2 · 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