In Node.js mixme, prior to v0.5.1, an attacker can add or alter properties of an object…
Priority MEDIUM 43CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
In Node.js mixme, prior to v0.5.1, an attacker can add or alter properties of an object via '__proto__' through the mutate() and merge() functions. The polluted attribute will be directly assigned to every object in the program. This will put the availability of the program at risk causing a potential denial of service (DoS).
Why it matters now
EPSS 0.01843 79th percentileScored 2026-11-07
Fix Fixed mixme (npm): 0.5.1
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | mixme (npm) | before 0.5.1 | 0.5.1 | Patch available | GHSA-r5cq-9537-9rpf |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- mixme (npm) Vendor— Affected before 0.5.1 Fixed in 0.5.1 Patch available GHSA-r5cq-9537-9rpf
Remediation
- Fix · GHSA-r5cq-9537-9rpf mixme (npm) Fixed in 0.5.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-28860
- 2026-10-03 Alias added: GHSA-r5cq-9537-9rpf
References
Patch 2
Advisory 4
Sources
- CVE-2021-28860 · CVE Program
- CVE-2021-28860 · NVD
- FIRST EPSS
- GHSA-r5cq-9537-9rpf · GitHub Advisory Database · CC BY 4.0
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