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CVE-2025-47947

ModSecurity Has Possible DoS Vulnerability

Published: May 21, 2025Updated: Jun 20, 2025 Sources: CVE List NVD BDUCWE-1050
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.6%
Top 58.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case (in stable released versions): when the payload's content type is `application/json`, and there is at least one rule which does a `sanitiseMatchedBytes` action. A patch is available at pull request 3389 and expected to be part of version 2.9.9. No known workarounds are available.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-1050

Affected Products

modsecuritytrustwave
Mixed
Security Products / vuln-mgmt-scanner
ModSecurityowasp-modsecurity
On-prem
Networking Infrastructure / firewall
ModSecurityOWASP Foundation, Inc.
Mixed
Security Products / vuln-mgmt-scanner
trustwavecommercialUSSecurity Products
owasp-modsecurityoss-projectNetworking Infrastructureaka modsecurity, mod_security
owasp foundation, inc.oss-projectSecurity Products

Exploitability

Official Patch Available

References

https://github.com/owasp-modsecurity/ModSecurity/pull/3389
github.com
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r
github.com
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r
github.com

Timeline

Published
May 21, 2025
Last Updated
Jun 20, 2025

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