What is the CVSS score of CVE-2025-47947?

CVE-2025-47947 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.5%.

Which versions of Modsecurity are affected by CVE-2025-47947?

Organizations using stable released face notable risk from CVE-2025-47947 rated CVSS 7.5. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2025-47947?

Yes, a public proof-of-concept exploit is available for CVE-2025-47947. Prioritise patching immediately. EPSS: 0.5%.

How to fix or mitigate CVE-2025-47947?

Within 30 days: Identify all affected systems running stable released and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Modsecurity CVE-2025-47947

HIGH

Excessive Platform Resource Consumption within a Loop (CWE-1050)

2025-05-21 security-advisories@github.com

Denial Of Service Apache Nginx Red Hat Modsecurity Suse Trustwave

7.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.5 HIGH

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

SUSE

HIGH

qualitative

Red Hat

7.5 HIGH

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:43 vuln.today

Patch released

Mar 28, 2026 - 18:43 nvd

Patch available

PoC Detected

Jun 20, 2025 - 16:13 vuln.today

Public exploit code

CVE Published

May 21, 2025 - 22:15 nvd

HIGH 7.5

DescriptionGitHub Advisory

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.

AnalysisAI

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-1050. 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. Affected products include: Trustwave Modsecurity. Version information: version 2.9.9..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Vendor StatusVendor

SUSE

Severity: High

Product	Status
SUSE Enterprise Storage 7.1	Fixed
SUSE Liberty Linux 8	Fixed
SUSE Liberty Linux 9	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS	Fixed

CVE-2025-47947 vulnerability details – vuln.today

Back

Modsecurity CVE-2025-47947

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

Technical ContextAI

RemediationAI

More in Modsecurity

Same weakness CWE-1050 – Excessive Platform Resource Consumption within a Loop

Same technique Denial Of Service

Vendor StatusVendor

SUSE

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External POC / Exploit Code