What’s Vulnerable › Vulnerabilities

CVE-2019-13617

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-07-16 · updated 2026-06-17
• Weakness: CWE-125

Description

njs through 0.3.3, used in NGINX, has a heap-based buffer over-read in nxt_vsprintf in nxt/nxt_sprintf.c during error handling, as demonstrated by an njs_regexp_literal call that leads to an njs_parser_lexer_error call and then an njs_parser_scope_error call.

Affected products

• F5 Njs: through 0.3.3

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15093
• https://github.com/nginx/njs/issues/174
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15093
• https://github.com/nginx/njs/issues/174

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