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CVE-2023-28709 Apache Tomcat

Affected softwareApache Tomcat
Severity7.5 High CVSS 3.1
Fixed in11.0.0-M5, 10.1.8, 9.0.74
WeaknessCWE-193
Published22 May 2023
Updated17 Jun 2026

Description

The fix for CVE-2023-24998 was incomplete for Apache Tomcat 11.0.0-M2 to 11.0.0-M4, 10.1.5 to 10.1.7, 9.0.71 to 9.0.73 and 8.5.85 to 8.5.87. If non-default HTTP connector settings were used such that the maxParameterCount could be reached using query string parameters and a request was submitted that supplied exactly maxParameterCount parameters in the query string, the limit for uploaded request parts could be bypassed with the potential for a denial of service to occur.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 3 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 48% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99% of all scored CVEs.

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 5badf94.

  • 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.

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2023 ↗ CPU 2023-Q4 Oracle Commerce / Workbench, Endeca Application Controller, Content Acquisition System (Apache Tomcat) (11.3.2)
Oracle Critical Patch Update July 2023 ↗ CPU 2023-Q3 Oracle Communications Applications / DBPlugin (Apache Tomcat) (10.0.1.7.0)
Oracle MySQL / Monitoring: General (Apache Tomcat) (8.0.34 and prior)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Commerce Workbench, Endeca Application Controller, Content Acquisition System (Apache Tomcat) 11.3.2 11.3.2
Oracle Communications Applications DBPlugin (Apache Tomcat) 10.0.1.7.0 10.0.1.7.0
Oracle MySQL Monitoring: General (Apache Tomcat) 8.0.34 and prior

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.tomcat.embed:tomcat-embed-core 11.0.0-M2 11.0.0-M5 unbounded
org.apache.tomcat.embed:tomcat-embed-core 10.1.5 10.1.8 unbounded
org.apache.tomcat.embed:tomcat-embed-core 9.0.71 9.0.74 unbounded
org.apache.tomcat:tomcat-coyote 8.5.85 8.5.88 unbounded

Products and versions

5 products, 12 version entries
SourceVendorProductSchemeAffected versions
nvd apache tomcat generic ≥ 8.5.85 and ≤ 8.5.87 · ≥ 9.0.71 and ≤ 9.0.73 · ≥ 10.1.5 and ≤ 10.1.7 · 11.0.0:milestone2 · 11.0.0:milestone3 · 11.0.0:milestone4
nvd debian debian linux generic 12.0
nvd netapp 7-mode transition tool generic any version
osv org.apache.tomcat tomcat-coyote generic ≥ 8.5.85 and < 8.5.88
osv org.apache.tomcat.embed tomcat-embed-core generic ≥ 9.0.71 and < 9.0.74 · ≥ 10.1.5 and < 10.1.8 · ≥ 11.0.0 and < 11.0.0

References

URLTags
https://github.com/apache/tomcat/commit/5badf94e79e5de206fc0ef3054fd536b1bb787cd WEB
https://github.com/apache/tomcat/commit/ba848da71c523d94950d3c53c19ea155189df9dc WEB
https://github.com/apache/tomcat/commit/d53d8e7f77042cc32a3b98f589496a1ef5088e38 WEB
https://github.com/apache/tomcat/commit/fbd81421629afe8b8a3922d59020cde81caea861 WEB
https://github.com/apache/tomcat PACKAGE
https://lists.apache.org/thread/7wvxonzwb7k9hx9jt3q33cmy7j97jo3j WEB
https://security.gentoo.org/glsa/202305-37 WEB
https://security.netapp.com/advisory/ntap-20230616-0004 WEB
https://tomcat.apache.org/security-10.html WEB
https://tomcat.apache.org/security-11.html WEB

Timeline

Published2023-05-22By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.