Eclipse Vert.x up to 5.0.12/5.1.9/5.2.0 vertx-http-proxy resource consumption

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Eclipse Vert.x up to 5.0.12/5.1.9/5.2.0. This vulnerability affects unknown code of the component vertx-http-proxy. The manipulation leads to resource consumption. This vulnerability is listed as CVE-2026-102475. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Eclipse Vert.x up to 5.0.12/5.1.9/5.2.0. It has been rated as problematic. This issue affects an unknown functionality of the component vertx-http-proxy. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-102475 since 09/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-101928). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Eclipse

Name

• Vert.x

Version

• 5.0
• 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
• 5.1
• 5.1.0
• 5.1.1
• 5.1.2
• 5.1.3
• 5.1.4
• 5.1.5
• 5.1.6
• 5.1.7
• 5.1.8
• 5.1.9
• 5.2.0

License

• open-source

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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