CVE-2019-11837

7.5 highEPSS 1.4%

High (7.5) in f5 njs. EPSS 1.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

7.5 high

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 72% of CVEs (scores of 2026-10-31)
CWE: CWE-189
Published: 2019-05-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

f5:njs

References

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

Check your stack JSON