What’s Vulnerable › Vulnerabilities

CVE-2019-11389

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-04-21 · updated 2026-06-17
• Weakness: CWE-400

Description

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. /rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf allows remote attackers to cause a denial of service (ReDOS) by entering a specially crafted string with next# at the beginning and nested repetition operators. NOTE: the software maintainer disputes that this is a vulnerability because the issue cannot be exploited via ModSecurity

Affected products

• Modsecurity Owasp Modsecurity Core Rule Set: through 3.1.0

References

• https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1356
• https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1372
• https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1356
• https://github.com/SpiderLabs/owasp-modsecurity-crs/issues/1372

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