How severe is CVE-2018-16384?

CVE-2018-16384 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-16384 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16384?

CVE-2018-16384 primarily affects Owasp Owasp Modsecurity Core Rule Set. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-16384?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-16384 published?

CVE-2018-16384 was published on 2018-09-03 and last updated on 2026-06-17.

CVE-2018-16384

CVE-2018-16384 is a high-severity vulnerability in Owasp Owasp Modsecurity Core Rule Set with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Owasp Owasp Modsecurity Core Rule Set
Published: 2018-09-03
Last modified: 2026-06-17

Description

A SQL injection bypass (aka PL1 bypass) exists in OWASP ModSecurity Core Rule Set (owasp-modsecurity-crs) through v3.1.0-rc3 via {`a`b} where a is a special function name (such as "if") and b is the SQL statement to be executed.

Frequently asked questions

What is CVE-2018-16384?: A SQL injection bypass (aka PL1 bypass) exists in OWASP ModSecurity Core Rule Set (owasp-modsecurity-crs) through v3.1.0-rc3 via {`a`b} where a is a special function name (such as "if") and b is the SQL statement to be executed.
How severe is CVE-2018-16384?: CVE-2018-16384 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-16384 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16384?: CVE-2018-16384 primarily affects Owasp Owasp Modsecurity Core Rule Set. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-16384?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-16384 published?: CVE-2018-16384 was published on 2018-09-03 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*
cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:3.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:3.1.0:rc3:*:*:*:*:*:*

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