vulnerability
Amazon Linux AMI 2: CVE-2025-47947: Security patch for mod_security (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | May 21, 2025 | Jun 13, 2025 | May 20, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
May 21, 2025
Added
Jun 13, 2025
Modified
May 20, 2026
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.
Solutions
amazon-linux-ami-2-upgrade-mod_securityamazon-linux-ami-2-upgrade-mod_security-debuginfoamazon-linux-ami-2-upgrade-mod_security-mlogc
Rapid7 Labs
2026 Global Threat Landscape Report
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