High
CVSS 7.5 Subdomain Takeover Responsible Disclosure
Disclosure
Subdomain Takeover: img.[vendor] (Dangling WP Engine CNAME)
The subdomain img.[vendor] has a CNAME record pointing to 2y6hw8438dr81ty1hegbtle9.wpengine.netdna-cdn.com which no longer resolves (SERVFAIL). This dangling CNAME allows an attacker to claim the WP Engine CDN endpoint and serve arbitrary content under the [vendor] domain
- Target
- NA Gift Card Supplier
- Category
- Subdomain Takeover
- Channel
- Responsible Disclosure
- Disclosed
- 2026-03
Redaction note
Vendor identity withheld.
This finding is documented here as part of MemCyber’s public disclosure record. The vendor has been anonymized to a sector and region descriptor. Full technical detail — including root cause, reproducible proof-of-concept, remediation guidance, and vendor attribution where granted — is available to qualified prospects under NDA.
Coordinated disclosure
How we handled it.
- Reported to the vendor via Responsible Disclosure with a reproducible proof-of-concept.
- Triage + remediation window coordinated with the vendor security team.
- Fix verified before any public reference.
- This record published only after the embargo period closed.