Prototype pollution in deep-override
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
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
Prototype pollution vulnerability in 'deep-override' versions 1.0.0 through 1.0.1 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 0.03337 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed deep-override (npm): 1.0.2
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 |
|---|---|---|---|---|---|
| — | deep-override | 1.0.0, 1.0.1 | — | No fix listed | CNA |
| — | deep-override (npm) | 1.0.0 to before 1.0.2 | 1.0.2 | Patch available | GHSA-v659-54cx-g4qr |
- deep-override Vendor— Affected 1.0.0, 1.0.1 Fixed in — No fix listed CNA
- deep-override (npm) Vendor— Affected 1.0.0 to before 1.0.2 Fixed in 1.0.2 Patch available GHSA-v659-54cx-g4qr
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:deep-override_project:deep-override:*:*:*:*:*:*:*:* | 1.0.0 to before 1.0.2 | Vulnerable | Deep-override Project |
- cpe:2.3:a:deep-override_project:deep-override:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.0.2 Vulnerable ·Deep-override Project
Remediation
- Fix · GHSA-v659-54cx-g4qr deep-override (npm) Fixed in 1.0.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-25941
- 2026-10-03 Alias added: GHSA-v659-54cx-g4qr
References
Sources
- CVE-2021-25941 · CVE Program
- CVE-2021-25941 · NVD
- FIRST EPSS
- GHSA-v659-54cx-g4qr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences