Prototype pollution in 101
Priority HIGH 82CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
Prototype pollution vulnerability in '101' versions 1.0.0 through 1.6.3 allows an attacker to cause a denial of service and may lead to remote code execution.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.03299 88th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | 101 | 1.0.0, 1.1.0, 1.1.1, 1.2.0, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.6.0, 1.6.1, 1.6.2, 1.6.3 | — | No fix listed | CNA |
| — | 101 (npm) | 1.0.0 – 1.6.3 | — | No fix listed | GHSA-cwcx-rxgc-cmw3 |
- 101 Vendor— Affected 1.0.0, 1.1.0, 1.1.1, 1.2.0, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.6.0, 1.6.1, 1.6.2, 1.6.3 Fixed in — No fix listed CNA
- 101 (npm) Vendor— Affected 1.0.0 – 1.6.3 Fixed in — No fix listed GHSA-cwcx-rxgc-cmw3
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:101_project:101:*:*:*:*:*:node.js:*:* | 1.0.0 – 1.6.3 | Vulnerable | 101 Project |
- cpe:2.3:a:101_project:101:*:*:*:*:*:node.js:*:* Versions 1.0.0 – 1.6.3 Vulnerable ·101 Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-25943
- 2026-10-03 Alias added: GHSA-cwcx-rxgc-cmw3
References
Sources
- CVE-2021-25943 · CVE Program
- CVE-2021-25943 · NVD
- FIRST EPSS
- GHSA-cwcx-rxgc-cmw3 · GitHub Advisory Database · CC BY 4.0
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