CVE-2019-11837

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-05-09 · updated 2026-06-17
Weakness: CWE-189

Description

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.

Affected products

F5 Njs: through 0.3.1

References

https://github.com/nginx/njs/issues/155
https://github.com/nginx/njs/issues/155

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