How severe is CVE-2015-8857?

CVE-2015-8857 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-8857 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-8857?

CVE-2015-8857 affects Uglifyjs Project Uglifyjs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-8857?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-8857 published?

CVE-2015-8857 was published on 2017-01-23 and last updated on 2026-06-17.

CVE-2015-8857

CVE-2015-8857 is a critical-severity vulnerability in Uglifyjs Project Uglifyjs with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-254.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Uglifyjs Project Uglifyjs
Published: 2017-01-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2015-8857?: 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.
How severe is CVE-2015-8857?: CVE-2015-8857 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-8857 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-8857?: CVE-2015-8857 affects Uglifyjs Project Uglifyjs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-8857?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-8857 published?: CVE-2015-8857 was published on 2017-01-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:uglifyjs_project:uglifyjs:*:*:*:*:*:node.js:*:*

More vulnerabilities in Uglifyjs Project Uglifyjs

CVE-2022-37598 — Critical (CVSS 9.8): Prototype pollution vulnerability in function DEFNODE in ast.js in mishoo UglifyJS 3.13.2 via the name variable in…
CVE-2015-8858 — High (CVSS 7.5): The uglify-js package before 2.6.0 for Node.js allows attackers to cause a denial of service (CPU consumption) via…

All CVEs affecting Uglifyjs Project Uglifyjs →

Other CWE-254 vulnerabilities

CVE-2016-5788 — Critical (CVSS 10.0): General Electric (GE) Bently Nevada 3500/22M USB with firmware before 5.0 and Bently Nevada 3500/22M Serial have open…
CVE-2015-3972 — Critical (CVSS 10.0): The web interface on Janitza UMG 508, 509, 511, 604, and 605 devices supports only short PIN values for authentication,…
CVE-2015-1158 — Critical (CVSS 10.0): The add_job function in scheduler/ipp.c in cupsd in CUPS before 2.0.3 performs incorrect free operations for…
CVE-2019-15149 — Critical (CVSS 9.8): core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a…
CVE-2017-8227 — Critical (CVSS 9.8): Amcrest IPM-721S V2.420.AC00.16.R.20160909 devices have a timeout policy to wait for 5 minutes in case 30 incorrect…
CVE-2016-9568 — Critical (CVSS 9.8): A security design issue can allow an unprivileged user to interact with the Carbon Black Sensor and perform…

Browse all CWE-254 vulnerabilities →