CVE-2019-11837

HIGHNVD 7.57.5—

7.5

njs through 0.3.1, used in NGINX, has a segmentation fault in String.prototype.toBytes for negative arguments, related to nxt_utf8_next in nxt/nxt_utf8.h and njs_string_offset in njs/njs_string.c.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 51.8%
KEV: Not listed

Published

May 9, 2019

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://github.com/nginx/njs/issues/155
af854a3a-2127-422b-91ae-364da2661108https://github.com/nginx/njs/issues/155

Weakness Classification(1)

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

CWE-189

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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.

2026-05-27 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-2019-11837?

CVE-2019-11837 is a high vulnerability published on May 9, 2019. njs through 0.3.1, used in NGINX, has a segmentation fault in String.prototype.toBytes for negative arguments, related to nxtutf8next in nxt/nxtutf8.h and njsstringoffset in njs/njsstring.c.

When was CVE-2019-11837 disclosed?

CVE-2019-11837 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-2019-11837 actively exploited?

CVE-2019-11837 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-11837?

CVE-2019-11837 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2019-11837?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-11837, 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-2019-11837

📅 Published

🔄 Last Modified

🔗 References (2)