CVE-2021-23771
CVE-2021-23771 is a medium-severity vulnerability in Argencoders-notevil Project Argencoders-notevil with a CVSS 3.x base score of 6.5. 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: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 6.4
- EPSS exploit prediction: 1% (59th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1321
- Affected product: Argencoders-notevil Project Argencoders-notevil
- Published:
- Last modified:
Description
This affects all versions of package notevil; all versions of package argencoders-notevil. It is vulnerable to Sandbox Escape leading to Prototype pollution. The package fails to restrict access to the main context, allowing an attacker to add or modify an object's prototype. **Note:** This vulnerability derives from an incomplete fix in [SNYK-JS-NOTEVIL-608878](https://security.snyk.io/vuln/SNYK-JS-NOTEVIL-608878).
Frequently asked questions
- What is CVE-2021-23771?
- This affects all versions of package notevil; all versions of package argencoders-notevil. It is vulnerable to Sandbox Escape leading to Prototype pollution. The package fails to restrict access to the main context, allowing an attacker to add or modify an object's prototype. **Note:** This vulnerability derives from an incomplete fix in [SNYK-JS-NOTEVIL-608878](https://security.snyk.io/vuln/SNYK-JS-NOTEVIL-608878).
- How severe is CVE-2021-23771?
- CVE-2021-23771 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-23771 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-23771?
- CVE-2021-23771 primarily affects Argencoders-notevil Project Argencoders-notevil. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-23771?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-23771 published?
- CVE-2021-23771 was published on 2022-03-17 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:argencoders-notevil_project:argencoders-notevil:*:*:*:*:*:node.js:*:*
- cpe:2.3:a:notevil_project:notevil:*:*:*:*:*:node.js:*:*
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