CVE-2015-8857

Exp

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.

Published: 2017-01-23 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-8857 is rated High Exploit Risk (70.1/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.27%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2015-8857

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2015-8857

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.92% 0.27% -0.65%
2 2025-03-29 0.27% 0.92% +0.65%
3 2025-03-17 — 0.27% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-8857

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2015-8857

GitHub Security Advisory for CVE-2015-8857

GHSA-34r7-q49f-h37c · Severity: critical · Ecosystem: npm — Incorrect Handling of Non-Boolean Comparisons During Minification in uglify-js

OS Trackers for CVE-2015-8857

vendor priority summary link
debian unimportant CVE-2015-8857 unimportant priority: Debian including 1 source packages (uglifyjs), 2 status rows across 2 suites (bullseye, trixie): resolved 2. https://security-tracker.debian.org/tracker/CVE-2015-8857
ubuntu medium CVE-2015-8857 medium priority: Ubuntu including 1 source packages (uglifyjs), 24 status rows across 24 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, wily, xenial, yakkety, zesty): not-affected 16, ignored 5, DNE 1, needed 1, released 1. https://ubuntu.com/security/CVE-2015-8857

Affected software / configurations for CVE-2015-8857

Vendor Product Version Raw CPE
uglifyjs_project uglifyjs < 2.4.24 cpe:2.3:a:uglifyjs_project:uglifyjs:*:*:*:*:*:node.js:*:*

References for CVE-2015-8857

URL Tags
http://www.openwall.com/lists/oss-security/2016/04/20/11 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/96410 Third Party Advisory VDB Entry
https://nodesecurity.io/advisories/39 Exploit Patch Vendor Advisory
cvelogic Threat Intelligence