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Vulnerabilities

Security fix · CVE-2023-36478

Eclipse Jetty provides a web server and servlet container.

Published Oct 10, 2023 · catalog updated Jun 17, 2026 · Eclipse Jetty provides a

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-36478. EPSS is 4.83%. Act only if a listed version of Eclipse Jetty provides a is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Eclipse Jetty provides a).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
4.83%
Remediation
Version ranges on file
Affected products
cpe debian/debian linux · cpe eclipse/jetty · cpe jenkins/jenkins

Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in allows for HTTP/2 HPACK header values to exceed their size limit. determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true, the multiplication by 4 in line 295 will overflow, and length will become negative. will now be negative, and the check on line 296 will not be triggered. Furthermore, allows for user-entered HPACK header value sizes to be negative, potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by 2. This means that if a user provides a negative length value (or, more precisely, a length value which, when multiplied by the 4/3 fudge factor, is negative), and this length value is a very large positive number when multiplied by 2, then the user can cause a very large buffer to be allocated on the server. Users of HTTP/2 can be impacted by a remote denial of service attack. The issue has been fixed in versions 11.0.16, 10.0.16, and 9.4.53. There are no known workarounds.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe debian/debian linux10.0
  • cpe eclipse/jetty< 10.0.16
  • cpe eclipse/jetty< 11.0.16
  • cpe eclipse/jetty< 9.4.53
  • cpe jenkins/jenkins< 2.414.3
  • cpe jenkins/jenkins< 2.428

How to fix CVE-2023-36478

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-36478. EPSS is 4.83%. Act only if a listed version of Eclipse Jetty provides a is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-190: Integer Overflow; CWE-400: Uncontrolled Resource Consumption. EPSS 4.83%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Jenkins security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 10, 2023 · Monitored products — critical

    Detected

    Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in allows for HTTP/2 HPACK header values to exceed their size limit. determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true,

  2. Jun 17, 2026 · Monitored products — critical

    Updated

    Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in allows for HTTP/2 HPACK header values to exceed their size limit. determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true,

Sources

  • CVE.orgVulnerability recordCVE-2023-36478

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2023-36478

    Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in allows for HTTP/2 HPACK header values to exceed their size limit. determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true,

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Monitored products — criticalNov 3, 2026