`CVE-2013-4322` Apache Tomcat

Affected software	Apache Tomcat
Severity	4.3 Medium CVSS 2.0
Fixed in	`6.0.39`, `7.0.50`, `8.0.0-RC10`
Weakness	Improper input validation (CWE-20)
Published	26 Feb 2014
Updated	9 Oct 2026

Description

Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.

CWE-400 · Uncontrolled resource consumption

Exploitation status

No public exploit

No exploit has been reported in the sources we check. The 1 repository below are public GitHub repositories with fewer than 5 stars.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment exploitation: none
Indexed PoC 1 indexed, none at 5+ stars
EPSS 9.1% chance in 30 days

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

Index	Artifact	Stars	First seen
GitHub PoC	A simple python script PoC demonstrating the slow POST chunked transmission vulnerability.		2026-01-18

Index

Artifact

Stars

First seen

GitHub PoC

A simple python script PoC demonstrating the slow POST chunked transmission vulnerability.

2026-01-18

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: apache/tomcat 70dc3b2.

Protection none
Action unverified
Review automated Upstream data
Record active

Decided by	Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding	This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.
Candidate fix	https://bugzilla.redhat.com/show_bug.cgi?id=1069905 : a Red Hat bug: the triage, which links onward to the fix

Decided by

Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

Finding

This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Candidate fix

https://bugzilla.redhat.com/show_bug.cgi?id=1069905 : a Red Hat bug: the triage, which links onward to the fix

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update October 2016 ↗	CPU	2016-Q4	Oracle Communications Applications / Tomcat (9.7.3, 9.9.1, 10.4.1, 12.1.1 and earlier)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update October 2016 ↗

CPU

2016-Q4

Oracle Communications Applications / Tomcat (9.7.3, 9.9.1, 10.4.1, 12.1.1 and earlier)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Communications Applications	Tomcat	9.7.3, 9.9.1, 10.4.1, 12.1.1 and earlier	9.7.3 · 9.9.1 · 10.4.1

Family

Component

Versions, as Oracle lists them

Read as

Oracle Communications Applications

Tomcat

9.7.3, 9.9.1, 10.4.1, 12.1.1 and earlier

9.7.3 · 9.9.1 · 10.4.1

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.apache.tomcat:tomcat 0 6.0.39 unbounded

org.apache.tomcat:tomcat 7.0.0 7.0.50 unbounded

org.apache.tomcat:tomcat 8.0.0-RC1 8.0.0-RC10 unbounded

Package	Introduced	Fixed	Last affected
`org.apache.tomcat:tomcat`	0	`6.0.39`	unbounded
`org.apache.tomcat:tomcat`	7.0.0	`7.0.50`	unbounded
`org.apache.tomcat:tomcat`	8.0.0-RC1	`8.0.0-RC10`	unbounded

Products and versions

2 products, 194 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	apache	tomcat	generic	1.1.3 · 3.0 · 3.1 · 3.1.1 · 3.2 · 3.2.1 · 3.2.2 · 3.2.2:beta2 · 3.2.3 · 3.2.4 · 3.3 · 3.3.1 · 3.3.1a · 3.3.2 · 4 · 4.0.0 · 4.0.1 · 4.0.2 · 4.0.3 · 4.0.4 · 4.0.5 · 4.0.6 · 4.1.0 · 4.1.1 · 4.1.2 · 4.1.3 · 4.1.3:beta · 4.1.9:beta · 4.1.10 · 4.1.12 · 4.1.15 · 4.1.24 · 4.1.28 · 4.1.29 · 4.1.31 · 4.1.36 · 5 · 5.0.0 · 5.0.1 · 5.0.2 · 5.0.3 · 5.0.4 · 5.0.5 · 5.0.6 · 5.0.7 · 5.0.8 · 5.0.9 · 5.0.10 · 5.0.11 · 5.0.12 · 5.0.13 · 5.0.14 · 5.0.15 · 5.0.16 · 5.0.17 · 5.0.18 · 5.0.19 · 5.0.21 · 5.0.22 · 5.0.23 · 5.0.24 · 5.0.25 · 5.0.26 · 5.0.27 · 5.0.28 · 5.0.29 · 5.0.30 · 5.5.0 · 5.5.1 · 5.5.2 · 5.5.3 · 5.5.4 · 5.5.5 · 5.5.6 · 5.5.7 · 5.5.8 · 5.5.9 · 5.5.10 · 5.5.11 · 5.5.12 · 5.5.13 · 5.5.14 · 5.5.15 · 5.5.16 · 5.5.17 · 5.5.18 · 5.5.19 · 5.5.20 · 5.5.21 · 5.5.22 · 5.5.23 · 5.5.24 · 5.5.25 · 5.5.26 · 5.5.27 · 5.5.28 · 5.5.29 · 5.5.30 · 5.5.31 · 5.5.32 · 5.5.33 · 5.5.34 · 5.5.35 · 6 · 6.0 · 6.0.0 · 6.0.0:alpha · 6.0.1 · 6.0.1:alpha · 6.0.2 · 6.0.2:alpha · 6.0.2:beta · 6.0.3 · 6.0.10 · 6.0.11 · 6.0.12 · 6.0.13 · 6.0.14 · 6.0.15 · 6.0.16 · 6.0.17 · 6.0.18 · 6.0.19 · 6.0.20 · 6.0.24 · 6.0.26 · 6.0.27 · 6.0.28 · 6.0.29 · 6.0.30 · 6.0.31 · 6.0.32 · 6.0.33 · 6.0.35 · 6.0.36 · ≤ 6.0.37 · 7.0.0 · 7.0.0:beta · 7.0.1 · 7.0.2 · 7.0.2:beta · 7.0.3 · 7.0.4 · 7.0.4:beta · 7.0.10 · 7.0.11 · 7.0.12 · 7.0.13 · 7.0.14 · 7.0.15 · 7.0.16 · 7.0.17 · 7.0.18 · 7.0.19 · 7.0.20 · 7.0.21 · 7.0.22 · 7.0.23 · 7.0.24 · 7.0.25 · 7.0.26 · 7.0.27 · 7.0.28 · 7.0.29 · 7.0.30 · 7.0.31 · 7.0.32 · 7.0.33 · 7.0.34 · 7.0.35 · 7.0.36 · 7.0.37 · 7.0.38 · 7.0.39 · 7.0.40 · 7.0.41 · 7.0.42 · 7.0.43 · 7.0.44 · 7.0.45 · 7.0.46 · 7.0.50 · 8.0.0:rc1 · 8.0.0:rc2 · 8.0.0:rc3 · 8.0.0:rc4 · 8.0.0:rc5 · 8.0.0:rc6 · 8.0.0:rc7 · 8.0.0:rc8 · 8.0.0:rc9
osv	org.apache.tomcat	tomcat	generic	＜ 6.0.39 · ≥ 7.0.0 and ＜ 7.0.50 · ≥ 8.0.0 and ＜ 8.0.0

Source

Vendor

Product

Scheme

Affected versions

nvd

apache

tomcat

generic

1.1.3 · 3.0 · 3.1 · 3.1.1 · 3.2 · 3.2.1 · 3.2.2 · 3.2.2:beta2 · 3.2.3 · 3.2.4 · 3.3 · 3.3.1 · 3.3.1a · 3.3.2 · 4 · 4.0.0 · 4.0.1 · 4.0.2 · 4.0.3 · 4.0.4 · 4.0.5 · 4.0.6 · 4.1.0 · 4.1.1 · 4.1.2 · 4.1.3 · 4.1.3:beta · 4.1.9:beta · 4.1.10 · 4.1.12 · 4.1.15 · 4.1.24 · 4.1.28 · 4.1.29 · 4.1.31 · 4.1.36 · 5 · 5.0.0 · 5.0.1 · 5.0.2 · 5.0.3 · 5.0.4 · 5.0.5 · 5.0.6 · 5.0.7 · 5.0.8 · 5.0.9 · 5.0.10 · 5.0.11 · 5.0.12 · 5.0.13 · 5.0.14 · 5.0.15 · 5.0.16 · 5.0.17 · 5.0.18 · 5.0.19 · 5.0.21 · 5.0.22 · 5.0.23 · 5.0.24 · 5.0.25 · 5.0.26 · 5.0.27 · 5.0.28 · 5.0.29 · 5.0.30 · 5.5.0 · 5.5.1 · 5.5.2 · 5.5.3 · 5.5.4 · 5.5.5 · 5.5.6 · 5.5.7 · 5.5.8 · 5.5.9 · 5.5.10 · 5.5.11 · 5.5.12 · 5.5.13 · 5.5.14 · 5.5.15 · 5.5.16 · 5.5.17 · 5.5.18 · 5.5.19 · 5.5.20 · 5.5.21 · 5.5.22 · 5.5.23 · 5.5.24 · 5.5.25 · 5.5.26 · 5.5.27 · 5.5.28 · 5.5.29 · 5.5.30 · 5.5.31 · 5.5.32 · 5.5.33 · 5.5.34 · 5.5.35 · 6 · 6.0 · 6.0.0 · 6.0.0:alpha · 6.0.1 · 6.0.1:alpha · 6.0.2 · 6.0.2:alpha · 6.0.2:beta · 6.0.3 · 6.0.10 · 6.0.11 · 6.0.12 · 6.0.13 · 6.0.14 · 6.0.15 · 6.0.16 · 6.0.17 · 6.0.18 · 6.0.19 · 6.0.20 · 6.0.24 · 6.0.26 · 6.0.27 · 6.0.28 · 6.0.29 · 6.0.30 · 6.0.31 · 6.0.32 · 6.0.33 · 6.0.35 · 6.0.36 · ≤ 6.0.37 · 7.0.0 · 7.0.0:beta · 7.0.1 · 7.0.2 · 7.0.2:beta · 7.0.3 · 7.0.4 · 7.0.4:beta · 7.0.10 · 7.0.11 · 7.0.12 · 7.0.13 · 7.0.14 · 7.0.15 · 7.0.16 · 7.0.17 · 7.0.18 · 7.0.19 · 7.0.20 · 7.0.21 · 7.0.22 · 7.0.23 · 7.0.24 · 7.0.25 · 7.0.26 · 7.0.27 · 7.0.28 · 7.0.29 · 7.0.30 · 7.0.31 · 7.0.32 · 7.0.33 · 7.0.34 · 7.0.35 · 7.0.36 · 7.0.37 · 7.0.38 · 7.0.39 · 7.0.40 · 7.0.41 · 7.0.42 · 7.0.43 · 7.0.44 · 7.0.45 · 7.0.46 · 7.0.50 · 8.0.0:rc1 · 8.0.0:rc2 · 8.0.0:rc3 · 8.0.0:rc4 · 8.0.0:rc5 · 8.0.0:rc6 · 8.0.0:rc7 · 8.0.0:rc8 · 8.0.0:rc9

osv

org.apache.tomcat

tomcat

generic

＜ 6.0.39 · ≥ 7.0.0 and ＜ 7.0.50 · ≥ 8.0.0 and ＜ 8.0.0

References

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1069905	bugzilla
https://github.com/apache/tomcat/commit/70dc3b279f7c99136c2c51bce8812508b4893c8b	WEB
https://github.com/apache/tomcat/commit/72613a0e2f88af789c2acc7093c82ff02b95b6d1	WEB
https://github.com/apache/tomcat/commit/a91516b80deaf1d0c6e04a7931765fdac34c4ccd	WEB
https://github.com/apache/tomcat/commit/b8cb9f5f91e9210ca107fd80f3e6acd47531daa7	WEB
https://github.com/apache/tomcat/commit/bed3a1a0d06a3c787183c6e90f326bbe17e49dd4	WEB
https://github.com/apache/tomcat/commit/d6a9898125f34e593de426e8c7dabb0f224fc00f	WEB
https://web.archive.org/web/20161024220018/http://secunia.com/advisories/59724	WEB
https://web.archive.org/web/20161024215804/http://secunia.com/advisories/59675	WEB
https://web.archive.org/web/20161024215639/http://secunia.com/advisories/59722	WEB

URL

Timeline

Published	2014-02-26	By the CVE Program.
NVD record modified	2026-10-09	NVD's own last-modified date for this record.

Published

2014-02-26

By the CVE Program.

NVD record modified

2026-10-09

NVD's own last-modified date for this record.

How VRT decided (17 of 24 rules ran)

17 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification no match A researcher's recorded decision for this specific CVE

5 manual classification no match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side no match Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven matched In scope Maven packages: org.apache.tomcat:tomcat

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint matched Mitigation candidate References include candidate fix URL (bugzilla tier): https://bugzilla.redhat.com/show_bug.cgi?id=1069905

18 open-source-maven skipped The affected package being open source on Maven, so the fix can be read

19 poc-derivable skipped An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit skipped Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match no match A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc skipped Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold withheld CVE ships in Oracle Critical Patch Update October 2016 (CPU) — Oracle treats it as urgent, so severity does not settle it

24 no-exploit-published decided it matched No exploit published No exploit code has been published, and an upstream fix path does exist, so the remediation half of the candidacy still holds.

Products the scope rules checked

The products this CVE's record names, and whether VRT tracks each one. The scope rules decided on these.

Vendor Product Tracked CPE Source

apache tomcat tracked cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:* yaml

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