Answer in brief
CVE-2026-45799 records a High severity (CVSS 7.5) vulnerability in Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service. The current sources do not mark it as known exploited. The current feed maps square/wire (generic), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime-jvm (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-45799 records a High severity (CVSS 7.5) vulnerability in Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service. The current sources do not mark it as known exploited. The current feed maps square/wire (generic), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime-jvm (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps square/wire (generic), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime-jvm (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| square/wiregeneric | < 6.3.0 || >= 7.0.0-alpha01, < 7.0.0-alpha03 | Not reported |
| com.squareup.wire:wire-runtimemaven | <=6.2.0 | 6.3.0 |
| com.squareup.wire:wire-runtimemaven | >=7.0.0-alpha01,<=7.0.0-alpha02 | 7.0.0-alpha03 |
| com.squareup.wire:wire-runtime-jvmmaven | <=6.2.0 | 6.3.0 |
| com.squareup.wire:wire-runtime-jvmmaven | >=7.0.0-alpha01,<=7.0.0-alpha02 | 7.0.0-alpha03 |
Published upstream
Jul 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps square/wire (generic), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime (maven), com.squareup.wire:wire-runtime-jvm (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| square/wiregeneric | < 6.3.0 || >= 7.0.0-alpha01, < 7.0.0-alpha03 | Not reported |
| com.squareup.wire:wire-runtimemaven | <=6.2.0 | 6.3.0 |
| com.squareup.wire:wire-runtimemaven | >=7.0.0-alpha01,<=7.0.0-alpha02 | 7.0.0-alpha03 |
| com.squareup.wire:wire-runtime-jvmmaven | <=6.2.0 | 6.3.0 |
| com.squareup.wire:wire-runtime-jvmmaven | >=7.0.0-alpha01,<=7.0.0-alpha02 | 7.0.0-alpha03 |
Published upstream
Jul 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.