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VulnerabilityPublished

CVE-2026-16308: IBM Enterprise Build of Quarkus · Unthrottled Resource Allocation

Affects IBM Enterprise Build of QuarkusSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMEnterprise Build of QuarkusAffected
  • >=3.27.1 <=3.27.4.SP2
  • >=3.33.1 <=3.33.2.SP2
Fixed in–

CPE configurations (6)

  • cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.1:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.4.sp2:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.4.sp2:sp2:*:*:*:*:*:*
  • cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.1:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.2.sp2:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.2.sp2:sp2:*:*:*:*:*:*

AI-suggested

Until an official fix is released, consider implementing network-level protections such as rate limiting or filtering multipart MIME requests to mitigate potential denial of service attempts. Monitor vendor communications for updates.

Description

CVE-2026-16308 is a high-severity vulnerability in IBM Enterprise Build of Quarkus versions 3.27.1 through 3.27.4.SP2 and 3.33.1 through 3.33.2.SP2. It involves unbounded accumulation of multipart MIME part-header bytes in the Quarkus REST component, which could allow a remote attacker to cause a denial of service (DoS). No official patch or remediation guidance is currently provided by the vendor. There are no known exploits in the wild at this time.

References

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