Integer overflow in java/org/apache/tomcat/util/buf/Ascii.java in Apache Tomcat before 6.0.40, 7.x before 7.0.53, and 8.x before 8.0.4,…

Description

Integer overflow in java/org/apache/tomcat/util/buf/Ascii.java in Apache Tomcat before 6.0.40, 7.x before 7.0.53, and 8.x before 8.0.4, when operated behind a reverse proxy, allows remote attackers to conduct HTTP request smuggling attacks via a crafted Content-Length HTTP header.

Scores

EPSS (exploitation in 30 days)

8.8% · top 4.8% of all CVEs (3 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

• n/a
• CWE-189 (opens in a new tab)All about CWE-189 and its CVEs

Affected products

• n/a

  • affected n/a

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Mavenorg.apache.tomcat:tomcatGHSA-xh5x-j8jf-pcpx (opens in a new tab)
• Mavenorg.apache.tomcat:tomcat-utilGHSA-xh5x-j8jf-pcpx (opens in a new tab)

References (49)

• http://advisories.mageia.org/MGASA-2014-0268.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 59121 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2015:0765 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 59732 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 59835 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20140527 Re: [SECURITY] CVE-2014-0099 Apache Tomcat information disclosure (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• RHSA-2015:0675 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://www.vmware.com/security/advisories/VMSA-2014-0012.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www-01.ibm.com/support/docview.wss?uid=swg21681528 (opens in a new tab)x_refsource_CONFIRMx_transferred
• MDVSA-2015:052 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• RHSA-2015:0720 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 20140527 [SECURITY] Re: [SECURITY] CVE-2014-0099 Apache Tomcat information disclosure (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• 59849 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://linux.oracle.com/errata/ELSA-2014-0865.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 67668 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• MDVSA-2015:084 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• DSA-3530 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 59678 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• HPSBUX03102 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• 20140527 [SECURITY] CVE-2014-0097 Apache Tomcat information disclosure (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• http://tomcat.apache.org/security-7.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20141205 NEW: VMSA-2014-0012 - VMware vSphere product updates address security vulnerabilities (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• MDVSA-2015:053 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• HPSBUX03150 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• FEDORA-2015-2109 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• http://tomcat.apache.org/security-8.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www-01.ibm.com/support/docview.wss?uid=swg21678231 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://tomcat.apache.org/security-6.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04851013 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 59873 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1578814 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20141205 NEW: VMSA-2014-0012 - VMware vSphere product updates address security vulnerabilities (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• 1030302 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• HPSBOV03503 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1578812 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1580473 (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-3447 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 60729 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 60793 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20140527 [SECURITY] CVE-2014-0097 Apache Tomcat information disclosure (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• http://www-01.ibm.com/support/docview.wss?uid=swg21680603 (opens in a new tab)x_refsource_CONFIRMx_transferred
• [tomcat-dev] 20190319 svn commit: r1855831 [23/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [tomcat-dev] 20190325 svn commit: r1856174 [21/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [tomcat-dev] 20190413 svn commit: r1857494 [15/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [tomcat-dev] 20190415 svn commit: r1857582 [16/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [tomcat-dev] 20200203 svn commit: r1873527 [23/30] - /tomcat/site/trunk/docs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [tomcat-dev] 20200213 svn commit: r1873980 [26/34] - /tomcat/site/trunk/docs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-xh5x-j8jf-pcpx (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2014-0099](https://trackcve.app/badge/CVE-2014-0099.svg)](https://trackcve.app/cve/CVE-2014-0099)

Record last updated 14 Oct 2026, 16:20 UTC.