CVE-2020-5232 json
Ethereum Name Service - Malicious takeover of previously owned ENS names
published 2020-01-30 6 y ago modified 2026-09-10 1 mo ago also GHSA-8f9f-pc5v-9r5h , EUVD-2020-0255
- cvss
- 8.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
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.
Patch / fix
Exploit prediction
1.18% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| NVD | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| NVD | 2.0 | 4.9 | AV:N/AC:M/Au:S/C:P/I:P/A:N |
| GitHub | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @ensdomains/ens | <0.4.0 |
0.4.0 |
Affected products
- ensdomains @ensdomains/ens
Classification
- Weakness
-
- CWE-285 Improper Authorization
References
-
github.com
/ensdomains/ens/commit/36e10e71fcddcade88646821e0a57cc6c19e1ecf
web, patch, third-party-advisory
-
github.com
/ensdomains/ens/security/advisories/GHSA-8f9f-pc5v-9r5h
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-5232
advisory
Sources
- CVE List CVE-2020-5232
- GitHub Advisory GHSA-8f9f-pc5v-9r5h
- NVD CVE-2020-5232
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