Bug 2553091 (CVE-2026-102461) - CVE-2026-102461 io.vertx/vertx-json-schema: vertx-json-schema: Denial of Service via inefficient uniqueItems array validation
Summary: CVE-2026-102461 io.vertx/vertx-json-schema: vertx-json-schema: Denial of Serv...
Keywords:
Status: NEW
Alias: CVE-2026-102461
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-15 08:32 UTC by OSIDB Bzimport
Modified: 2026-10-16 13:17 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-15 08:32:06 UTC 
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 uniqueItems keyword validation uses an O(n²) pairwise comparison loop with no short-circuit or size limit. A remote unauthenticated attacker can submit a moderately-sized JSON array that consumes disproportionate CPU time, leading to denial of service.



The impacted component is io.vertx:vertx-json-schema.



The following Vert.x modules depend on vertx-json-schema and are also affected:



io.vertx:vertx-web-openapi-router io.vertx:vertx-web-validation io.vertx:vertx-openapi
Note You need to log in before you can comment on or make changes to this bug.