CVE-2025-48866

Publication date 2 June 2025

Last updated 16 June 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
modsecurity-apache 25.04 plucky
Fixed 2.9.8-1.1ubuntu0.1
24.10 oracular
Fixed 2.9.7-1ubuntu0.24.10.1
24.04 LTS noble
Fixed 2.9.7-1ubuntu0.24.04.1~esm1
22.04 LTS jammy
Fixed 2.9.5-1ubuntu0.1~esm2
20.04 LTS focal
Fixed 2.9.3-1ubuntu0.1+esm1
18.04 LTS bionic
Fixed 2.9.2-1ubuntu0.1~esm2
16.04 LTS xenial
Fixed 2.9.0-1ubuntu0.1~esm2
14.04 LTS trusty
Fixed 2.7.7-2ubuntu0.1~esm2

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H