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CVE-2020-7767
Regular Expression Denial of Service (ReDoS)
Medium5.3EPSS 1.6%
- Published
- Updated
- Reserved
- Assigned by
- snyk
Description
All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| snykCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:U/RC:C |
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
- Regular Expression Denial of Service (ReDoS)
- CWE-400 (opens in a new tab)All about CWE-400 and its CVEs
Affected products
express-validators
- affected < unspecified
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmexpress-validatorsGHSA-cf2x-rqc8-grfq (opens in a new tab)
References (1)
- https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-cf2x-rqc8-grfq (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-7767)Record last updated .