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Δ / VULNERABILITY RECORD

CVE-2013-4286.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 5.8CVSS 2.0 · nvd@nist.gov
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSModifiedModified Oct 09, 2026

Disclosure summary

Apache Tomcat before 6.0.39, 7.x before 7.0.47, and 8.x before 8.0.0-RC3, when an HTTP connector or AJP connector is used, does not properly handle certain inconsistent HTTP request headers, which allows remote attackers to trigger incorrect identification of a request's length and conduct request-smuggling attacks via (1) multiple Content-Length headers or (2) a Content-Length header and a "Transfer-Encoding: chunked" header. NOTE: this vulnerability exists because of an incomplete fix for CVE-2005-2090.

Source-reported weakness categories

CWE-20

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2013-4286

Open original source · Updated Oct 09, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

VendorProduct / associationVersion / bounds
apachetomcat7.0.0
apachetomcat7.0.0
apachetomcat7.0.1
apachetomcat7.0.2
apachetomcat7.0.2
apachetomcat7.0.3
apachetomcat7.0.4
apachetomcat7.0.4
apachetomcat7.0.10
apachetomcat7.0.11
apachetomcat7.0.12
apachetomcat7.0.13
apachetomcat7.0.14
apachetomcat7.0.15
apachetomcat7.0.16
apachetomcat7.0.17
apachetomcat7.0.18
apachetomcat7.0.19
apachetomcat7.0.20
apachetomcat7.0.21
apachetomcat7.0.22
apachetomcat7.0.23
apachetomcat7.0.24
apachetomcat7.0.25
apachetomcat7.0.26
apachetomcat7.0.27
apachetomcat7.0.28
apachetomcat7.0.29
apachetomcat7.0.30
apachetomcat7.0.31
apachetomcat7.0.32
apachetomcat7.0.33
apachetomcat7.0.34
apachetomcat7.0.35
apachetomcat7.0.36
apachetomcat7.0.37
apachetomcat7.0.38
apachetomcat7.0.39
apachetomcat7.0.40
apachetomcat7.0.41
apachetomcat7.0.42
apachetomcat7.0.43
apachetomcat7.0.44
apachetomcat7.0.45
apachetomcat7.0.46
apachetomcat8.0.0
apachetomcat8.0.0
apachetomcat* {"versionEndIncluding":"6.0.37"}
apachetomcat1.1.3
apachetomcat3.0
apachetomcat3.1
apachetomcat3.1.1
apachetomcat3.2
apachetomcat3.2.1
apachetomcat3.2.2
apachetomcat3.2.2
apachetomcat3.2.3
apachetomcat3.2.4
apachetomcat3.3
apachetomcat3.3.1
apachetomcat3.3.1a
apachetomcat3.3.2
apachetomcat4
apachetomcat4.0.0
apachetomcat4.0.1
apachetomcat4.0.2
apachetomcat4.0.3
apachetomcat4.0.4
apachetomcat4.0.5
apachetomcat4.0.6
apachetomcat4.1.0
apachetomcat4.1.1
apachetomcat4.1.2
apachetomcat4.1.3
apachetomcat4.1.3
apachetomcat4.1.9
apachetomcat4.1.10
apachetomcat4.1.12
apachetomcat4.1.15
apachetomcat4.1.24
apachetomcat4.1.28
apachetomcat4.1.29
apachetomcat4.1.31
apachetomcat4.1.36
apachetomcat5
apachetomcat5.0.0
apachetomcat5.0.1
apachetomcat5.0.2
apachetomcat5.0.3
apachetomcat5.0.4
apachetomcat5.0.5
apachetomcat5.0.6
apachetomcat5.0.7
apachetomcat5.0.8
apachetomcat5.0.9
apachetomcat5.0.10
apachetomcat5.0.11
apachetomcat5.0.12
apachetomcat5.0.13
apachetomcat5.0.14

Showing 100 associations; open the original for the complete set.

Original records & references

PUBLISHED 2014-02-26T09:55:08-05:00
MODIFIED 2026-10-09T16:17:07-04:00
INGESTED 2026-10-10T20:50:17-04:00