Apache Tomcat: FileUpload large number of parts with headers DoS (CVE-2025-48988)
Apache Tomcat contains a vulnerability related to resource allocation without limits or throttling when handling file uploads with a large number of parts and headers. This affects multiple versions of Apache Tomcat, including 11.0.0 through 11.0.7, 10.1.0 through 10.1.41, and 9.0.0 through 9.0.105, as well as some older EOL versions. The issue can lead to denial of service (DoS) conditions. Fixed versions are 11.0.8, 10.1.42, and 9.0.106. Users are advised to upgrade to these versions to mitigate the vulnerability.
AI Analysis
Technical Summary
CVE-2025-48988 is an Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat's file upload handling. Specifically, when processing a large number of parts with headers, Tomcat does not properly limit resource allocation, which can be exploited to cause a denial of service. The vulnerability affects Apache Tomcat versions from 11.0.0 through 11.0.7, 10.1.0 through 10.1.41, and 9.0.0 through 9.0.105, including some older end-of-life versions such as 8.5.0 through 8.5.100. The issue is resolved in versions 11.0.8, 10.1.42, and 9.0.106.
Potential Impact
Exploitation of this vulnerability can lead to denial of service conditions by exhausting server resources due to unbounded allocation when processing file uploads with many parts and headers. This can degrade or disrupt the availability of affected Apache Tomcat servers.
Mitigation Recommendations
A fix is available. Users should upgrade affected Apache Tomcat instances to versions 11.0.8, 10.1.42, or 9.0.106 or later to remediate this vulnerability. No other specific mitigations are indicated by the vendor advisory.
Apache Tomcat: FileUpload large number of parts with headers DoS (CVE-2025-48988)
Description
Apache Tomcat contains a vulnerability related to resource allocation without limits or throttling when handling file uploads with a large number of parts and headers. This affects multiple versions of Apache Tomcat, including 11.0.0 through 11.0.7, 10.1.0 through 10.1.41, and 9.0.0 through 9.0.105, as well as some older EOL versions. The issue can lead to denial of service (DoS) conditions. Fixed versions are 11.0.8, 10.1.42, and 9.0.106. Users are advised to upgrade to these versions to mitigate the vulnerability.
Affected software
pkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=esm-infra-legacy/trustypkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-infra-legacy/trustypkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-infra-legacy/xenialpkg:deb/ubuntu/[email protected]+esm4?arch=source&distro=esm-apps-legacy/xenialpkg:deb/ubuntu/[email protected]~18.04.3+esm6?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]+esm8?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/[email protected]+esm4?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/[email protected]~esm4?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]~26.04.1?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]~26.04.1?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-48988 is an Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat's file upload handling. Specifically, when processing a large number of parts with headers, Tomcat does not properly limit resource allocation, which can be exploited to cause a denial of service. The vulnerability affects Apache Tomcat versions from 11.0.0 through 11.0.7, 10.1.0 through 10.1.41, and 9.0.0 through 9.0.105, including some older end-of-life versions such as 8.5.0 through 8.5.100. The issue is resolved in versions 11.0.8, 10.1.42, and 9.0.106.
Potential Impact
Exploitation of this vulnerability can lead to denial of service conditions by exhausting server resources due to unbounded allocation when processing file uploads with many parts and headers. This can degrade or disrupt the availability of affected Apache Tomcat servers.
Mitigation Recommendations
A fix is available. Users should upgrade affected Apache Tomcat instances to versions 11.0.8, 10.1.42, or 9.0.106 or later to remediate this vulnerability. No other specific mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2025-48988
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:14.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
Threat ID: 6a58b50768715ace43db294b
Added to database: 07/16/2026, 10:40:07 UTC
Last enriched: 09/08/2026, 15:07:45 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 36
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