GHSA-998X-VGVP-XWPC: Unauthenticated out-of-bounds stack write via oversized ECDSA signature in swift-nio-ssh · Advisory · apple/swift-nio-ssh · GitHub

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PublisherGitHub

Article IDGHSA-998X-VGVP-XWPC

Verified snapshot27 Sept 2026, 14:00 UTC

Linked CVEs1

Linked CVE reports

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CVE-2026-43798A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh

Source and provenance

Original title: Unauthenticated out-of-bounds stack write via oversized ECDSA signature in swift-nio-ssh · Advisory · apple/swift-nio-ssh · GitHub. Captured 27 Sept 2026, 14:00 UTC. The stored article is used for enrichment and change detection; BlackTree does not republish the publisher's full text here.

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