Swift vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary
CVE-2026-28898Mediumgithub.com/apple/swift-nio-http2: SwiftNIO HTTP/2: HTTP/2-to-HTTP/1 Request Smuggling via unvalidated :path pseudo-header in HTTP2ToHTTP1CodecCVE-2026-28975Mediumgithub.com/apple/swift-nio-extras: NIOExtras: NIOHTTPRequestDecompressor ratio limit bypass via inflated Content-LengthCVE-2026-28980Highgithub.com/apple/swift-nio: SwiftNIO NIOHTTP1: HTTPDecoder accepts unbounded HTTP/1 header blocks, enabling remote DoSCVE-2026-43671Highgithub.com/apple/swift-nio: SwiftNIO: Out-of-bounds write via ByteBuffer index and length UInt32 overflowCVE-2026-28970Mediumgithub.com/apple/swift-nio: SwiftNIO: CRLF Injection in outbound HTTP request URI via NIOHTTPRequestHeadersValidatorCVE-2026-47122Mediumgithub.com/sparkle-project/Sparkle: Sparkle's AppInstaller post-stage-1 XPC listener accepts unvalidated connections, allowing spoofed appcast item data injectionCVE-2026-47121Mediumgithub.com/sparkle-project/Sparkle: Sparkle: Binary delta apply intermediate-symlink traversal in malicious .deltaGHSA-39G5-644C-QWCGLowgithub.com/apple/container: container: pf Rule Injection via Domain Name Argument in `container system dns create --localhost` CommandCVE-2026-30867MediumCocoaMQTT: CocoaMQTT: Denial of Service via Reachable Assertion in `PUBLISH` Packet Parsing CVE-2026-28815Highswift-crypto: Swift Crypto: X-Wing HPKE Decapsulation Accepts Malformed Ciphertext LengthCVE-2026-28499Mediumgithub.com/vapor/leaf-kit: LeafKit's HTML escaping may be skipped for Collection values, enabling XSSCVE-2026-27120Mediumgithub.com/vapor/leaf-kit: Leaf-kit html escaping does not work on characters that are part of extended grapheme clusterCVE-2026-20613Lowgithub.com/apple/containerization: Container and Containerization archive extraction does not guard against escapes from extraction base directory.CVE-2026-23886Mediumgithub.com/swift-otel/swift-w3c-trace-context: Swift W3C TraceContext vulnerable to a malformed HTTP header causing a crashGHSA-88Q6-JCJG-HVMWHighgithub.com/beatt83/jose-swift: jose-swift has JWT Signature Verification Bypass via None AlgorithmGHSA-PC9J-5V36-2MWWLowgithub.com/awslabs/aws-sdk-swift: AWS SDK for Swift adopted defense in depth enhancement for region parameter valueGHSA-XVR7-P2C6-J83WMediumgithub.com/apple/swift-nio-http2: swift-nio-http2 affected by HTTP/2 MadeYouReset vulnerabilityCVE-2025-30404Criticalexecutorch: ExecuTorch integer overflow vulnerabilityCVE-2025-54949Criticalexecutorch: ExecuTorch heap buffer overflow vulnerabilityCVE-2025-54950Criticalexecutorch: ExecuTorch out-of-bounds access vulnerabilityCVE-2025-30405Criticalexecutorch: ExecuTorch integer overflow vulnerabilityCVE-2025-54951Criticalexecutorch: ExecuTorch vulnerable to Heap-based Buffer OverflowCVE-2025-30402Highexecutorch: ExecuTorch vulnerable to Heap-based Buffer Overflow attackCVE-2025-0509Highgithub.com/sparkle-project/Sparkle: Sparkle Signing Checks BypassCVE-2025-0343Lowgithub.com/apple/swift-asn1: CVE-2025-0343: Swift ASN.1 can crash when parsing maliciously formed BER/DER

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