CVE-2020-8178

Name: CVE-2020-8178
Creator: NVD / NIST
Published: 2020-07-15T17:15:11.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.63%

Last modified Jun 17, 2026

CVE-2020-8178 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Insufficient input validation in npm package `jison` <= 0.4.18 may lead to OS command injection attacks.. EPSS estimates a 3.63% chance of exploitation in the next 30 days.

Description

Insufficient input validation in npm package `jison` <= 0.4.18 may lead to OS command injection attacks.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.63%

88.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jison Project	Jison	<= 0.4.18

References

https://hackerone.com/reports/690010Exploit, Third Party Advisory
https://hackerone.com/reports/690010Exploit, Third Party Advisory

Timeline

Published: Jul 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8178?

Insufficient input validation in npm package `jison` <= 0.4.18 may lead to OS command injection attacks.

How severe is CVE-2020-8178?

CVE-2020-8178 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.63% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8178?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8178?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST