Wire Swift runtime: negative LENGTH_DELIMITED length in skipGroup() crashes any protobuf-decoding service

Summary Wire's Swift runtime Wire SPM/CocoaPods product, implemented by wire-runtime-swift did not reject a negative LENGTHDELIMITED field length while skipping an unknown protobuf group. A crafted 10-byte protobuf payload could cause ProtoReader.skipGroup to read a length-delimited field whose...

Wire Swift runtime: negative LENGTH_DELIMITED length in skipGroup() crashes any protobuf-decoding service

Wire's Swift runtime Wire SPM/CocoaPods product, implemented by wire-runtime-swift did not reject a negative LENGTHDELIMITED field length while skipping an unknown protobuf group. A crafted 10-byte protobuf payload could cause ProtoReader.skipGroup to read a length-delimited field whose varint...

Integer Overflow or Wraparound

Overview Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the ByteArrayProtoReader32 fast path in wire-runtime/src/commonMain/kotlin/com/squareup/wire/ByteArrayProtoReader32.kt. An attacker can crash protobuf decoding by supplying a length-delimited field wit...

CVE-2026-45799

A flaw was found in Wire, a library used for gRPC and protocol buffers. In the wire-runtime component, a remote attacker can exploit improper validation of a length-delimited field. By sending a crafted protobuf message with a negative length, the system attempts to access an invalid memory...

CVE-2026-45799

Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.3.0 and 7.0.0-alpha03, ByteArrayProtoReader32.skipGroup and ProtoReader.skipGroup in wire-runtime do not validate that a LENGTHDELIMITED field length is non-negative before skip, allowing a crafted protobuf...

CVE-2026-45799: Improper Validation of Array Index

Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.3.0 and 7.0.0-alpha03, ByteArrayProtoReader32.skipGroup and ProtoReader.skipGroup in wire-runtime do not validate that a LENGTHDELIMITED field length is non-negative before skip, allowing a crafted protobuf...

Improper Validation of Array Index

Overview Affected versions of this package are vulnerable to Improper Validation of Array Index in the skipGroup function. An attacker can cause a service crash by sending a crafted protobuf payload with a negative length in a length-delimited field inside a group, leading to an unchecked runtime...

Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service

CVE-2026-45799 Maintainer summary Wire's protobuf group-skipping logic did not reject negative lengths before skipping a length-delimited field inside a group. A crafted protobuf payload could cause Wire to throw an unchecked runtime exception during decoding instead of the documented IOException...

Improper Validation of Array Index

Overview Affected versions of this package are vulnerable to Improper Validation of Array Index in the skipGroup function. An attacker can cause a service crash by sending a crafted protobuf payload with a negative length in a length-delimited field inside a group, leading to an unchecked runtime...

GHSA-7XPR-HC2W-34M9 Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service

CVE-2026-45799 Maintainer summary Wire's protobuf group-skipping logic did not reject negative lengths before skipping a length-delimited field inside a group. A crafted protobuf payload could cause Wire to throw an unchecked runtime exception during decoding instead of the documented IOException...

PT-2026-42032

Name of the Vulnerable Software and Affected Versions wire-runtime versions prior to 6.3.0 wire-runtime-jvm versions 5.3.1 and 5.3.3 Wire 7 alpha versions prior to 7.0.0-alpha03 Description In the wire-runtime component, the ByteArrayProtoReader32.skipGroup and ProtoReader.skipGroup functions fai...

Uncontrolled Recursion

Overview Affected versions of this package are vulnerable to Uncontrolled Recursion due to improper enforcement of recursion limits in ByteArrayProtoReader32.kt and ProtoReader.kt. An attacker can cause a denial of service by sending deeply nested group structures. Remediation Upgrade...