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.
CVE-2019-11837
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 68.9%
- 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.
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 68.9% 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
Explore the affected products and dependency analysis for CVE-2019-11837
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