CVE-2020-8178

CRITICALNVD 9.89.8—

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 90.5%
KEV: Not listed

Published

July 15, 2020

Last Modified

November 21, 2024

References (2)

support@hackeronehttps://hackerone.com/reports/690010
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/690010

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
npm	jison	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-78OS Command Injection

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 06:08 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 01:18 UTCEG score recompute
2026-05-27 01:18 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch

Frequently asked(5)

What is CVE-2020-8178?

CVE-2020-8178 is a critical vulnerability published on July 15, 2020. Insufficient input validation in npm package jison <= 0.4.18 may lead to OS command injection attacks.

When was CVE-2020-8178 disclosed?

CVE-2020-8178 was first published in the National Vulnerability Database on July 15, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-8178 actively exploited?

CVE-2020-8178 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-8178?

CVE-2020-8178 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-8178?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8178, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-8178

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CVE-2020-8178

📅 Published

🔄 Last Modified

🔗 References (2)

Patch Availability(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-8178?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)