CVE-2023-26139
Versions of the package underscore-keypath from 0.0.11 are vulnerable to Prototype Pollution via the name argument of the setProperty() function.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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__”.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.89% probability · 59th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Affected
- underscore-keypath project/underscore-keypath
- Source
- report@snyk.io
EPSS 0.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://gist.github.com/lelecolacola123/cc0d1e73780127aea9482c05f2ff3252Third Party Advisory
- https://security.snyk.io/vuln/SNYK-JS-UNDERSCOREKEYPATH-5416714Third Party Advisory
- https://gist.github.com/lelecolacola123/cc0d1e73780127aea9482c05f2ff3252Third Party Advisory
- https://security.snyk.io/vuln/SNYK-JS-UNDERSCOREKEYPATH-5416714Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.