CVE-2021-42581
Last modified
CVE-2021-42581 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Prototype poisoning in function mapObjIndexed in Ramda 0.27.0 and earlier allows attackers to compromise integrity or availability of application via supplying a crafted object (that contains an own property "__proto__") as an argument to the function. NOTE: the vendor disputes this because the observed behavior only means that a user can create objects that the user didn't know would contain custom prototypes. EPSS estimates a 1.30% chance of exploitation in the next 30 days.
Description
Prototype poisoning in function mapObjIndexed in Ramda 0.27.0 and earlier allows attackers to compromise integrity or availability of application via supplying a crafted object (that contains an own property "__proto__") as an argument to the function. NOTE: the vendor disputes this because the observed behavior only means that a user can create objects that the user didn't know would contain custom prototypes
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ramdajs | Ramda | <= 0.27.0 |
References
- https://github.com/ramda/ramda/pull/3192Issue Tracking, Patch, Third Party Advisory
- https://jsfiddle.net/3pomzw5g/2/Exploit, Third Party Advisory
- https://github.com/ramda/ramda/pull/3192Issue Tracking, Patch, Third Party Advisory
- https://jsfiddle.net/3pomzw5g/2/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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