CVE-2026-102467 Denial of service in Eclipse Vert.x
Attackers can cause denial of service in Eclipse Vert.x applications by sending compressed WebSocket frames that trigger excessive memory allocation via zip bombs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-102467?
CVE-2026-102467 is a high-severity denial of service vulnerability in Eclipse Vert.x, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the WebSocket implementation does not define a maximum number of bytes allocation when decompressing frames or messages. This can be used to implement DDOS attacks with a zip bomb.
The impacted component is io.vertx:vertx-core.
Weakness: CWE-770
Which versions are affected by CVE-2026-102467?
It affects 1 product.
Products include Eclipse Vert.x.
How do I fix CVE-2026-102467?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-102467 being exploited?
There is no known exploitation of CVE-2026-102467 in the wild and no public exploit code.
Other vulnerabilities in Eclipse Vert.x
- CVE-2019-17640 Path Traversal in Eclipse Vert
- CVE-2018-12542 Eclipse Vert.x does not properly neutralize '' (forward slashes) sequences that can resolve to an external location
- CVE-2018-12544 Moderate severity vulnerability that affects io.vertx:vertx-core
- CVE-2026-102469 Deserialization in Eclipse Vert.x
- CVE-2018-12540 High severity vulnerability that affects io.vertx:vertx-web
Sources
Also known as ECHO-02d8-e9f3-9c15, GHSA-h722-h6c2-6j3c, GHSA-q858-fr4g-2q5q.