CVE-2019-11837
CVSS v3
7.5
HIGH
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2019-05-09
Frequently asked questions
What is CVE-2019-11837?
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.
Is CVE-2019-11837 actively exploited?
Active exploitation of CVE-2019-11837 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-11837?
CVE-2019-11837 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-11837 affecting your environment?
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