CVE-2020-24391

CRITICALNVD 9.89.8—Elevated

9.8

mongo-express before 1.0.0 offers support for certain advanced syntax but implements this in an unsafe way. NOTE: this may overlap CVE-2019-10769.

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 99.8%
KEV: Not listed

Published

March 30, 2021

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://github.com/mongo-express/mongo-express/commit/3a26b079e7821e0e209c3ee0cc2ae15ad467b91a
cve@mitrehttps://github.com/mongodb-js/query-parser/issues/16
af854a3a-2127-422b-91ae-364da2661108https://github.com/mongo-express/mongo-express/commit/3a26b079e7821e0e209c3ee0cc2ae15ad467b91a
af854a3a-2127-422b-91ae-364da2661108https://github.com/mongodb-js/query-parser/issues/16

Affected Packages

(1 across 1 ecosystem)

npm(1)

Package	Vulnerable range	Fixed in	Dependents
mongodb-query-parser	—	2.0.0	—

Data Freshness Timeline

(refreshed 4× in last 7d / 12× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-26 19:00 UTCEG score recompute
2026-05-26 07:17 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Nucleihttp/cves/2020/CVE-2020-24391.yaml
First seen Jan 1, 2020
Mongo-Express - Remote Code Execution
Open source ↗

Frequently asked(5)

What is CVE-2020-24391?

CVE-2020-24391 is a critical vulnerability published on March 30, 2021. mongo-express before 1.0.0 offers support for certain advanced syntax but implements this in an unsafe way. NOTE: this may overlap CVE-2019-10769.

When was CVE-2020-24391 disclosed?

CVE-2020-24391 was first published in the National Vulnerability Database on March 30, 2021, 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-2020-24391 actively exploited?

CVE-2020-24391 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-24391?

CVE-2020-24391 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-24391?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-24391, 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-2020-24391

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