Ethereum Name Service - Malicious takeover of previously owned ENS names
Priority MEDIUM 40CWE-285Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.
Summary
A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.
Why it matters now
EPSS 0.01181 67th percentileScored 2026-11-07
Fix Fixed @ensdomains/ens (ensdomains): 0.4.0@ensdomains/ens (npm): 0.4.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ensdomains | @ensdomains/ens | before 0.4.0 | 0.4.0 | Patch available | CNA |
| — | @ensdomains/ens (npm) | before 0.4.0 | 0.4.0 | Patch available | GHSA-8f9f-pc5v-9r5h |
- @ensdomains/ens Vendorensdomains Affected before 0.4.0 Fixed in 0.4.0 Patch available CNA
- @ensdomains/ens (npm) Vendor— Affected before 0.4.0 Fixed in 0.4.0 Patch available GHSA-8f9f-pc5v-9r5h
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ens.domains:ethereum_name_service:*:*:*:*:*:*:*:* | up to 0.1.0 | Vulnerable | ensdomains |
- cpe:2.3:a:ens.domains:ethereum_name_service:*:*:*:*:*:*:*:* Versions up to 0.1.0 Vulnerable ·ensdomains
Remediation
- Fix · CNA @ensdomains/ens (ensdomains) Fixed in 0.4.0
- Fix · GHSA-8f9f-pc5v-9r5h @ensdomains/ens (npm) Fixed in 0.4.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-5232
- 2026-10-03 Alias added: GHSA-8f9f-pc5v-9r5h
References
More ensdomains Ethereum Name Service vulnerabilities
- TI-2023-20046 .eth registrar controller can shorten the duration of registered names CVSS 3.1MEDIUM 6.5
- TI-2026-18358 ENS DNSSEC Oracle Vulnerable to RSA Signature Forgery via Missing PKCS#1 v1.5 Padding Validation CVSS 4.0LOW 2.7
Sources
- CVE-2020-5232 · CVE Program
- CVE-2020-5232 · NVD
- FIRST EPSS
- GHSA-8f9f-pc5v-9r5h · 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