Mailchimp for WooCommerce < 6.3 - Unauthenticated Customer Email and Cart Disclosure via IDOR
Priority LOW 30CWE-639Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.
Summary
The Mailchimp for WooCommerce WordPress plugin before 6.3 does not require authentication or verify ownership before loading a saved cart from a request-supplied identifier that is derived from a customer's email address, allowing an unauthenticated attacker who knows a customer's email address to confirm that the customer shops at the store and to read that customer's saved cart contents.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00268 19th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Mailchimp for WooCommerce (Unknown): 6.3
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 | Mailchimp for WooCommerce | before 6.3 | 6.3 | Patch available | CNA |
- Mailchimp for WooCommerce VendorUnknown Affected before 6.3 Fixed in 6.3 Patch available CNA
Remediation
- Fix · CNA Mailchimp for WooCommerce (Unknown) Fixed in 6.3
Timeline
- 2026-10-02 Threatist record created from CVE-2026-92436
- 2026-10-03 Alias added: GHSA-c9pv-5cv5-r8c5
References
Sources
- CVE-2026-92436 · CVE Program
- CVE-2026-92436 · NVD
- FIRST EPSS
- GHSA-c9pv-5cv5-r8c5 · 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