CVE-2021-28860
CVE-2021-28860 is a critical-severity vulnerability in Adaltas Mixme with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 6.4
- EPSS exploit prediction: 2% (78th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1321
- Affected product: Adaltas Mixme
- Published:
- Last modified:
Description
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).
Frequently asked questions
- What is CVE-2021-28860?
- 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).
- How severe is CVE-2021-28860?
- CVE-2021-28860 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
- Is CVE-2021-28860 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-28860?
- CVE-2021-28860 affects Adaltas Mixme. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-28860?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-28860 published?
- CVE-2021-28860 was published on 2021-05-03 and last updated on 2026-07-05.
References
- https://github.com/adaltas/node-mixme/commit/cfd5fbfc32368bcf7e06d1c5985ea60e34cd4028
- https://github.com/adaltas/node-mixme/issues/1
- https://github.com/adaltas/node-mixme/security/advisories/GHSA-79jw-6wg7-r9g4
- https://security.netapp.com/advisory/ntap-20210618-0005/
- https://www.npmjs.com/~david
- http://nodejs.com
Affected products (1)
- cpe:2.3:a:adaltas:mixme:*:*:*:*:*:node.js:*:*
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