closurecompiler downloads Resources over HTTP

published 2018-06-01 8 y ago modified 2026-06-17 4 mo ago also GHSA-hjgp-8ffr-hwwr , EUVD-2019-0302

cvss: 8.1; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 76%
public exploits: 0; none known

closurecompiler is a Closure Compiler for node.js. closurecompiler downloads binary resources over HTTP, which leaves it vulnerable to MITM attacks. It may be possible to cause remote code execution (RCE) by swapping out the requested binary with an attacker controlled binary if the attacker is on the network or positioned in between the user and the remote server.

Patch / fix

links 1

github.com/dcodeIO/ClosureCompiler.js@e59848f commit

Exploit prediction

1.66% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.1	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C
GitHub	3.0	8.1	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	closurecompiler	<=1.6.1	no fix listed

Affected products

HackerOne closurecompiler node module

Classification

Weakness

CWE-311 Missing Encryption of Sensitive Data
CWE-310 Cryptographic Issues

References

github.com /dcodeIO/ClosureCompiler.js/commit/e59848f5975e5b15279c044daf9cff8ff192bae6
web
nodesecurity.io /advisories/169
third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2016-10582
advisory
github.com /advisories/GHSA-hjgp-8ffr-hwwr
advisory
npmjs.com /advisories/169
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary