CVE-2026-28815

Description

A remote attacker can supply a short X-Wing HPKE encapsulated key and trigger an out-of-bounds read in the C decapsulation path, potentially causing a crash or memory disclosure depending on runtime protections. This issue is fixed in swift-crypto version 4.3.1.

CVSS Vector

References

• https://github.com/apple/swift-crypto/security/advisories/GHSA-9m44-rr2w-ppp7