What’s Vulnerable › Vulnerabilities
CVE-2021-23358: Arbitrary Code Injection
- Severity: high (CVSS 7.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 4.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-03-29 · updated 2026-06-17
- Weakness: CWE-94
Description
The package underscore from 1.13.0-0 and before 1.13.0-2, from 1.3.2 and before 1.12.1 are vulnerable to Arbitrary Code Injection via the template function, particularly when a variable property is passed as an argument as it is not sanitized.
Affected products
- Debian Linux: 9.0, 10.0
- Fedoraproject Fedora: 33, 34
- Tenable.sc: through 5.18.0
- jashkenas underscore: from 1.3.2 before 1.12.1; from 1.13.0-0 before 1.13.0-2 — fixed in 1.12.1, 1.13.0-2
- Npm Underscore: from 1.3.2 before 1.12.1 — fixed in 1.12.1
How to fix
Upgrade to a fixed version: jashkenas underscore 1.12.1, 1.13.0-2; Npm Underscore 1.12.1. Check the vendor advisory for mitigations.
References
- https://github.com/jashkenas/underscore/blob/master/modules/template.js%23L71
- https://lists.apache.org/thread.html/r5df90c46f7000c4aab246e947f62361ecfb849c5a553dcdb0ef545e1%40%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/r770f910653772317b117ab4472b0a32c266ee4abbafda28b8a6f9306%40%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/raae088abdfa4fbd84e1d19d7a7ffe52bf8e426b83e6599ea9a734dba%40%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/rbc84926bacd377503a3f5c37b923c1931f9d343754488d94e6f08039%40%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/re69ee408b3983b43e9c4a82a9a17cbbf8681bb91a4b61b46f365aeaf%40%3Cissues.cordova.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/03/msg00038.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOKATXXETD2PF3OR36Q5PD2VSVAR6J5Z/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGEE7U4Z655A2MK5EW4UQQZ7B64XJWBV/
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1081504
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBJASHKENAS-1081505
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1081503
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