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CVE-2026-45799

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

Description (CNA)

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 LENGTH_DELIMITED field length is non-negative before skip(), allowing a crafted protobuf varint encoding -128 as a signed Int to make skip(-128) move the internal position negative and make the next readByte() throw ArrayIndexOutOfBoundsException instead of the documented IOException or ProtocolException, which can crash services using ProtoAdapter.decode(byte[]) on untrusted payloads. This issue is fixed in versions 6.3.0 and 7.0.0-alpha03.

Affected (CNA)

Vendor / productVersions
square / wireaffected < 6.3.0; affected >= 7.0.0-alpha01, < 7.0.0-alpha03

CWE

CWE-129

References

ADP enrichment

CISA-ADP

No English description supplied.