IBM Quarkus REST DoS via Unbounded MIME Header Accum (3.27,3.33)
CVE-2026-16308 Published on July 30, 2026
IBM Enterprise Build of Quarkus is affected by a DoS vulnerability
IBM Enterprise Build of Quarkus 3.27.1 through 3.27.4.SP2, and 3.33.1 through 3.33.2.SP2 Quarkus REST could allow a remote attacker to cause a denial of service due to unbounded accumulation of multipart MIME part-header bytes.
Vulnerability Analysis
CVE-2026-16308 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2026-16308
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Affected Versions
IBM Enterprise Build of Quarkus:- Version 3.27.1, <= 3.27.4.SP2 is affected.
- Version 3.33.1, <= 3.33.2.SP2 is affected.