Unverified payment notifications in PayHere Payment Gateway allow payment bypass
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 PayHere Payment Gateway WordPress plugin from 2.4.0 through 2.4.5 does not verify the authenticity of payment notifications when the merchant secret is unset (CWE-345). An unauthenticated remote attacker can forge a payment confirmation and mark any order as paid without payment. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
The PayHere Payment Gateway WordPress plugin from 2.4.0 through 2.4.5 does not verify the authenticity of payment notifications when the merchant secret is unset, which is the default state, allowing unauthenticated attackers to forge a payment confirmation and mark any order as paid without payment.
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 | PayHere Payment Gateway | 2.4.0 – 2.4.5 | — | No fix listed | CNA |
- PayHere Payment Gateway VendorUnknown Affected 2.4.0 – 2.4.5 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for PayHere Payment Gateway.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Timeline
- 2026-11-02 Threatist record created from CVE-2026-103310
- 2026-11-02 Alias added: GHSA-fpcc-wxm7-87wc
- 2026-11-02 Weakness changed · CISA ADP
- 2026-11-02 CISA SSVC decision points changed
References
Sources
- CVE-2026-103310 · CVE Program
- CVE-2026-103310 · NVD
- FIRST EPSS
- GHSA-fpcc-wxm7-87wc · 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