Prototype pollution in underscore-keypath
Priority MEDIUM 41CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Versions of the package underscore-keypath from 0.0.11 are vulnerable to Prototype Pollution via the name argument of the setProperty() function. Exploiting this vulnerability is possible due to improper input sanitization which allows the usage of arguments like “__proto__”.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00886 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| — | underscore-keypath | 0.0.11 and later | — | No fix listed | CNA |
| — | underscore-keypath (npm) | 0.0.11 – 0.9.3 | — | No fix listed | GHSA-gpvc-mx6g-cchv |
- underscore-keypath Vendor— Affected 0.0.11 and later Fixed in — No fix listed CNA
- underscore-keypath (npm) Vendor— Affected 0.0.11 – 0.9.3 Fixed in — No fix listed GHSA-gpvc-mx6g-cchv
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:underscore-keypath_project:underscore-keypath:*:*:*:*:*:node.js:*:* | 0.0.11 | Vulnerable | Underscore-keypath Project |
- cpe:2.3:a:underscore-keypath_project:underscore-keypath:*:*:*:*:*:node.js:*:* Versions 0.0.11 Vulnerable ·Underscore-keypath Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-26139
- 2026-10-03 Alias added: GHSA-gpvc-mx6g-cchv
References
Sources
- CVE-2023-26139 · CVE Program
- CVE-2023-26139 · NVD
- FIRST EPSS
- GHSA-gpvc-mx6g-cchv · 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