CVE Tools
Sign in

CVE-2025-48866

ModSecurity has possible DoS vulnerability in sanitiseArg action

Published: Jun 2, 2025Updated: Jul 2, 2025 Sources: CVE List NVD BDUCWE-1050
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.8%
Top 49.6%
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 prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseArg` (and `sanitizeArg` - this is the same action but an alias) is vulnerable to adding an excessive number of arguments, thereby leading to denial of service. Version 2.9.10 fixes the issue. As a workaround, avoid using rules that contain the `sanitiseArg` (or `sanitizeArg`) action.

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
Open in CVSS calculator →

Weaknesses

CWE-1050

Affected Products

modsecurityowasp
Mixed
Networking Infrastructure / firewall
ModSecurityowasp-modsecurity
On-prem
Networking Infrastructure / firewall
ModSecurityOWASP Foundation, Inc.
Mixed
Security Products / vuln-mgmt-scanner
МСВСфераООО «НЦПР»
On-prem
Operating Systems / linux-distro
owasposs-projectUSNetworking Infrastructureaka owasp modsecurity core rule set, modsecurity, modsecurity-crs
owasp-modsecurityoss-projectNetworking Infrastructureaka modsecurity, mod_security
owasp foundation, inc.oss-projectSecurity Products
ооо «нцпр»commercialRUOperating Systems

Exploitability

Official Patch Available

References

https://github.com/owasp-modsecurity/ModSecurity/commit/3a54ccea62d3f7151bb08cb78d60c5e90b53ca2e
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-f82j-8pp7-cw2w
github.com
and 5 more references View all →

Timeline

Published
Jun 2, 2025
Last Updated
Jul 2, 2025

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-48866 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows