In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the HTTP proxy provides a body transformer interceptor that relies on a max buffered bytes limit to ensure a bounded buffer for each request. This can be used to force a server to indefinitely allocate heap. This vulnerability requires to use an intercepting body transformer. The impacted component is io.vertx:vertx-http-proxy.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Eclipse
  • Vert.x

Configuration 1 [-]

OR cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*
cpe:2.3:a:eclipse:vert.x:5.2.0:*:*:*:*:*:*:*

No data.

References
Link Providers
https://github.com/eclipse-vertx/vertx-http-proxy/security/advisories/GHSA-mjwh-5qfp-hjgc cve-icon cve-icon cve-icon
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/351 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-102475 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-102475 cve-icon
History

Tue, 20 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*
cpe:2.3:a:eclipse:vert.x:5.2.0:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Mon, 19 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse vert.x
Vendors & Products Eclipse
Eclipse vert.x

Fri, 16 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 15 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Description In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the HTTP proxy provides a body transformer interceptor that relies on a max buffered bytes limit to ensure a bounded buffer for each request. This can be used to force a server to indefinitely allocate heap. This vulnerability requires to use an intercepting body transformer. The impacted component is io.vertx:vertx-http-proxy.
Title io.vertx/vertx-http-proxy: vertx-http-proxy: Denial of Service via unbounded memory allocation in body transformer
Weaknesses CWE-770
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

threat_severity

Important
cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2026-10-15T07:24:09.062Z

Updated: 2026-10-15T14:35:42.319Z

Reserved: 2026-09-29T08:40:58.969Z

Link: CVE-2026-102475

cve-icon Vulnrichment

Updated: 2026-10-15T14:35:38.548Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-15T08:16:36.797

Modified: 2026-10-20T19:30:08.493

Link: CVE-2026-102475

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-15T07:24:09Z

Links: CVE-2026-102475 - Bugzilla