CVE-2019-11839

CRITICALNVD 9.89.8—

9.8

njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in Array.prototype.push after a resize, related to njs_array_prototype_push in njs/njs_array.c, because of njs_array_expand size mishandling.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 60.3%
KEV: Not listed

Published

May 9, 2019

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://github.com/nginx/njs/issues/152
af854a3a-2127-422b-91ae-364da2661108https://github.com/nginx/njs/issues/152

Weakness Classification(1)

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

CWE-787Out-of-bounds Write

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
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2026-06-04 13:10 UTCepss_batch
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2026-06-02 20:11 UTCepss_batch
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2026-05-31 22:29 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 19:47 UTCEG score recompute
2026-05-27 19:47 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2019-11839?

CVE-2019-11839 is a critical vulnerability published on May 9, 2019. njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in Array.prototype.push after a resize, related to njsarrayprototypepush in njs/njsarray.c, because of njsarrayexpand size mishandling.

When was CVE-2019-11839 disclosed?

CVE-2019-11839 was first published in the National Vulnerability Database on May 9, 2019, 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-2019-11839 actively exploited?

CVE-2019-11839 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-11839?

CVE-2019-11839 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2019-11839?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-11839, 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

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CVE-2019-11839

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-11839?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)