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CVE-2019-11388

20
FAUCET Score

CVE-2019-11388 describes a Regular Expression Denial of Service (ReDOS) vulnerability in OWASP ModSecurity Core Rule Set (CRS) through version 3.1.0, specifically within the REQUEST-932-APPLICATION-ATTACK-RCE.conf file. An attacker could trigger this by submitting a specially crafted string with nested repetition operators, potentially causing a denial of service. The vulnerability has a CVSS score of 5.3 (MEDIUM), indicating a low impact on availability and no impact on confidentiality or integrity, with a network attack vector and low attack complexity. The software maintainer disputes this as a vulnerability due to the inability to exploit it via ModSecurity itself. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.0CPE matchmatch criteria
cpe:2.3:a:modsecurity:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 58th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / SpiderLabs/owasp-modsecurity-crs/issues/1354
Issue TrackingThird Party Advisory
github.com / SpiderLabs/owasp-modsecurity-crs/issues/1372
ExploitIssue TrackingThird Party Advisory