Bug 2563238 (CVE-2026-86983)

Summary: CVE-2026-86983 swift-crypto: swift-crypto: Denial of Service via unbounded input to the P-384 VOPRF API
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in swift-crypto. A remote attacker can trigger a Denial of Service (DoS) by providing excessively long or unbounded input to an application utilizing the P-384 Verifiable Oblivious Pseudorandom Function (VOPRF) interface. Because the interface does not adequately restrict input length, processing the untrusted data can cause the application process to terminate unexpectedly.
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Description OSIDB Bzimport 2026-10-28 23:11:51 UTC
A remote attacker may be able to terminate a process that passes attacker-controlled input to the P-384 VOPRF API without bounding its length. This vulnerability is addressed in swift-crypto version 5.0.3.