CVE-2019-18413In TypeStack class-validator 0.10.2, validate() input validation can be bypassed because certain internal attributes can be overwritten…
- 3.7LowCVSS base score
- 2.0%Exploitation in 30 daysEPSS · top 19% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In TypeStack class-validator 0.10.2, validate() input validation can be bypassed because certain internal attributes can be overwritten via a conflicting name. Even though there is an optional forbidUnknownValues parameter that can be used to reduce the risk of this bypass, this option is not documented and thus most developers configure input validation in the vulnerable default manner. With this vulnerability, attackers can launch SQL Injection or XSS attacks by injecting arbitrary malicious input. NOTE: a software maintainer agrees with the "is not documented" finding but suggests that much of the responsibility for the risk lies in a different product.
Timeline
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| mitreCNA (assigner) | 3.1 | Low3.7 | CVSS:3.1/AC:H/AV:N/A:N/C:N/I:L/PR:N/S:U/UI:N |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.0% · top 19% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.7.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmclass-validatorGHSA-fj58-h2fr-3pp2 (opens in a new tab)
References
References4
- https://github.com/typestack/class-validator/issues/438 (opens in a new tab)x_transferred
- https://github.com/typestack/class-validator#passing-options (opens in a new tab)x_transferred
- https://github.com/typestack/class-validator/issues/438#issuecomment-964728471 (opens in a new tab)x_transferred
- https://github.com/typestack/class-validator/issues/1422#issuecomment-1344635415 (opens in a new tab)x_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)
- EUVD EUVD-2021-2194 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-fj58-h2fr-3pp2 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-18413)Record last updated .