CVE-2021-36716 json
Improper Input Validation in is-email
published 2021-07-14 5 y ago modified 2026-06-17 4 mo ago also GHSA-j377-2x76-558h , EUVD-2021-2537
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
A ReDoS (regular expression denial of service) flaw was found in the Segment is-email package before 1.0.1 for Node.js. An attacker that is able to provide crafted input to the isEmail(input) function may cause an application to consume an excessive amount of CPU.
Patch / fix
- npm is-email 1.0.1
- segment is-email 1.0.1
Exploit prediction
0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | is-email | <1.0.1 |
1.0.1 |
Classification
References
-
segment.com
/docs/release_notes/2021-07-13-cve-2021-36716/
vendor-advisory
-
github.com
/segmentio/is-email/releases
web, release-notes, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-36716
advisory
-
github.com
/segmentio/is-email
package
-
segment.com
/docs/release_notes/2021-07-13-cve-2021-36716
web
Sources
- CVE List CVE-2021-36716
- GitHub Advisory GHSA-j377-2x76-558h
- NVD CVE-2021-36716
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