🛡️ CVE-2024-1300 — vertx-core
Description
Eclipse Vert.x vulnerable to a memory leak in TCP servers
A vulnerability in the Eclipse Vert.x toolkit causes a memory leak in TCP servers configured with TLS and SNI support. When processing an unknown SNI server name assigned the default certificate instead of a mapped certificate, the SSL context is erroneously cached in the server name map, leading to memory exhaustion. This flaw allows attackers to send TLS client hello messages with fake server names, triggering a JVM out-of-memory error.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability low.
Weakness class
CVE-2024-1300 is classified as CWE-400: Uncontrolled Resource Consumption. A request can consume memory, CPU or storage without limit, exhausting capacity for everyone else.
Affected software
CVE-2024-1300 is recorded against 2 packages.
- io.vertx:vertx-core (from 4.5.0 up to 4.5.3)
- unknown
Timeline and source
Published on 2 April 2024 and last revised on 28 February 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.
References
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
vertx.io (Web)
github.com (Package)
bugzilla.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
Details
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| io.vertx:vertx-core | 4.5.0 | 4.5.3 |
| unknown | — | — |
References
Similar Threats
- Medium CVE-2026-6860
- Medium CVE-2026-1002
- Medium CVE-2024-1023
More CVE 2024 advisories
Browse all of CVE 2024 in the advisory index.
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