CVE-2026-102463CWE-789

CVE-2026-102463

Medium · published October 15, 2026

CVSS v3.1
5.9
EPSS
0%
Percentile
22.2
In the wild
Unconfirmed
What it is

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 binary array decoder in vertx-pg-client (DataTypeCodec.binaryDecodeArray) allocates a Java array sized by a server-declared 32-bit dimension count with no upper bound. A malicious or compromised PostgreSQL server, or an on-path attacker intercepting an unencrypted connection, can send a crafted DataRow message with an excessively large array dimension value, causing the client to attempt a multi-gigabyte heap allocation and crash with an OutOfMemoryError.

The impacted component is io.vertx:vertx-pg-client.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.2 · CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00306 · 22.2th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-10-15T13:17Z
Affected products (3)
ProductVersionsFixed in
eclipse/vert.x≥ 4.5.0, < 4.5.354.5.35
eclipse/vert.x≥ 5.0.0, < 5.1.105.1.10
eclipse/vert.xall versions—
References (2)
https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-xqmh-8fhj-48fp · [email protected]https://gitlab.eclipse.org/security/cve-assignment/-/work_items/345 · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 15 OCT 08:13Z
    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 binary array decoder in vertx-pg-client…
    cvelistv5
  • 15 OCT 08:13Z
    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 binary array decoder in vertx-pg-client…
    cvelistv5