CVE-2015-8857

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-01-23 · updated 2026-06-17
Weakness: CWE-254

Description

The uglify-js package before 2.4.24 for Node.js does not properly account for non-boolean values when rewriting boolean expressions, which might allow attackers to bypass security mechanisms or possibly have unspecified other impact by leveraging improperly rewritten Javascript.

Affected products

Uglifyjs Project Uglifyjs: before 2.4.24 — fixed in 2.4.24

How to fix

Upgrade to a fixed version: Uglifyjs Project Uglifyjs 2.4.24. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2016/04/20/11
http://www.securityfocus.com/bid/96410
https://nodesecurity.io/advisories/39
http://www.openwall.com/lists/oss-security/2016/04/20/11
http://www.securityfocus.com/bid/96410
https://nodesecurity.io/advisories/39

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