Prototype pollution in jsonpointer
Priority MEDIUM 47CWE-843Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-843 and the CVSS impact.
Summary
This affects the package jsonpointer before 5.0.0. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.
Why it matters now
EPSS 0.02752 86th percentileScored 2026-11-07
Fix Partial jsonpointer: 5.0.0jsonpointer (npm): 5.0.0+1 more productRed Hat: 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | jsonpointer | before 5.0.0 | 5.0.0 | Patch available | CNA |
| — | jsonpointer (npm) | before 5.0.0 | 5.0.0 | Patch available | GHSA-282f-qqgm-c34q |
| — | org.webjars.npm:json-pointer (npm) | before 5.0.0 | 5.0.0 | Patch available | GHSA-282f-qqgm-c34q |
- jsonpointer Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available CNA
- jsonpointer (npm) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-282f-qqgm-c34q
- org.webjars.npm:json-pointer (npm) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-282f-qqgm-c34q
Remediation
- Fix · CNA jsonpointer Fixed in 5.0.0
- Fix · GHSA-282f-qqgm-c34q jsonpointer (npm) Fixed in 5.0.0 Advisory →
- Fix · GHSA-282f-qqgm-c34q org.webjars.npm:json-pointer (npm) Fixed in 5.0.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 4 | Affected | No fix planned: Will not fix |
| Red Hat Quay 3 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23807
- 2026-10-03 Alias added: GHSA-282f-qqgm-c34q
References
Sources
- CVE-2021-23807 · CVE Program
- CVE-2021-23807 · NVD
- FIRST EPSS
- GHSA-282f-qqgm-c34q · GitHub Advisory Database · CC BY 4.0
- CVE-2021-23807 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences