Remote memory exhaustion via multipart header accumulation
Published Jul 30, 2026 · Updated Jul 30, 2026
Denial of service in IBM Enterprise Build of Quarkus allows remote attackers to exhaust memory through multipart MIME part headers. In affected 3.27.1 through 3.27.4.SP2 and 3.33.1 through 3.33.2.SP2 releases, Quarkus REST accumulates part-header bytes without a bound. An unauthenticated network path to an endpoint that accepts multipart data is required, and exploitation can stall or terminate the application.
Summary
What happened
Denial of service in IBM Enterprise Build of Quarkus allows remote attackers to exhaust memory through multipart MIME part headers. In affected 3.27.1 through 3.27.4.SP2 and 3.33.1 through 3.33.2.SP2 releases, Quarkus REST accumulates part-header bytes without a bound. An unauthenticated network path to an endpoint that accepts multipart data is required, and exploitation can stall or terminate the application.
The record
- CVE
- CVE-2026-16308
- Published
- Jul 30, 2026
- Updated
- Jul 30, 2026
- Vendor
- IBM
- Product
- IBM Enterprise Build of Quarkus
- Classifications
- CWE-770, T1499.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 30, 2026CVE publishedPublication date reported by the CVE source.
- Jul 30, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.27.1 <=3.27.4.SP2
- Affected versionversion=3.33.1 <=3.33.2.SP2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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