Medium severity5.3NVD Advisory· Published Dec 2, 2019· Updated Jun 17, 2026
CVE-2019-19507
CVE-2019-19507
Description
In jpv (aka Json Pattern Validator) before 2.1.1, compareCommon() can be bypassed because certain internal attributes can be overwritten via a conflicting name, as demonstrated by 'constructor': {'name':'Array'}. This affects validate(). Hence, a crafted payload can overwrite this builtin attribute to manipulate the type detection result.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
jpvnpm | < 2.1.1 | 2.1.1 |
Affected products
3- cpe:2.3:a:json_pattern_validator_project:json_pattern_validator:*:*:*:*:*:*:*:*Range: <2.1.1
- jpv/Json Pattern Validatordescription
Patches
Vulnerability mechanics
References
4- github.com/manvel-khnkoyan/jpv/issues/6nvdExploitIssue TrackingThird Party AdvisoryWEB
- github.com/advisories/GHSA-rh46-3fgc-mvrfghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2019-19507ghsaADVISORY
- www.npmjs.com/package/jpvnvdProductWEB
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