Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 43.6%
CVSS Severity
CVSS v3 Score 7.5
References
- https://github.com/square/wire/commit/47d5b0dba53935d5332cd41a80a353b3fc90e7b0
- https://github.com/square/wire/commit/e4e56fab38a547d9625f05c97f1d8f0bcc3a5773
- https://github.com/square/wire/pull/3595
- https://github.com/square/wire/pull/3597
- https://github.com/square/wire/releases/tag/6.3.0
- https://github.com/square/wire/releases/tag/7.0.0-alpha03
- https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9
- https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9
Products affected by CVE-2026-45799
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cpe:2.3:a:squareup:wire:1.0.0
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cpe:2.3:a:squareup:wire:1.0.1
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cpe:2.3:a:squareup:wire:1.1.0
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cpe:2.3:a:squareup:wire:1.1.1
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cpe:2.3:a:squareup:wire:1.2.0
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cpe:2.3:a:squareup:wire:1.3.0
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cpe:2.3:a:squareup:wire:1.3.1
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cpe:2.3:a:squareup:wire:1.3.2
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cpe:2.3:a:squareup:wire:1.3.3
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cpe:2.3:a:squareup:wire:1.4.0
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cpe:2.3:a:squareup:wire:1.5.0
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cpe:2.3:a:squareup:wire:1.5.1
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cpe:2.3:a:squareup:wire:1.5.2
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cpe:2.3:a:squareup:wire:1.6.0
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cpe:2.3:a:squareup:wire:1.6.1
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cpe:2.3:a:squareup:wire:1.7.0
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cpe:2.3:a:squareup:wire:1.8.0
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cpe:2.3:a:squareup:wire:2.0.0
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cpe:2.3:a:squareup:wire:2.0.1
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cpe:2.3:a:squareup:wire:2.0.2
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cpe:2.3:a:squareup:wire:2.0.3
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cpe:2.3:a:squareup:wire:2.1.0
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cpe:2.3:a:squareup:wire:2.1.1
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cpe:2.3:a:squareup:wire:2.1.2
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cpe:2.3:a:squareup:wire:2.2.0
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cpe:2.3:a:squareup:wire:2.3.0
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cpe:2.3:a:squareup:wire:3.0.0
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cpe:2.3:a:squareup:wire:3.0.1
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cpe:2.3:a:squareup:wire:3.0.2
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cpe:2.3:a:squareup:wire:3.0.3
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cpe:2.3:a:squareup:wire:3.1.0
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cpe:2.3:a:squareup:wire:3.2.0
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cpe:2.3:a:squareup:wire:3.2.1
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cpe:2.3:a:squareup:wire:3.2.2
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cpe:2.3:a:squareup:wire:3.3.0
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cpe:2.3:a:squareup:wire:3.4.0
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cpe:2.3:a:squareup:wire:3.5.0
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cpe:2.3:a:squareup:wire:3.5.1
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cpe:2.3:a:squareup:wire:3.6.0
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cpe:2.3:a:squareup:wire:3.6.1
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cpe:2.3:a:squareup:wire:3.7.0
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cpe:2.3:a:squareup:wire:3.7.1
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cpe:2.3:a:squareup:wire:3.8.0
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cpe:2.3:a:squareup:wire:4.0.0
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cpe:2.3:a:squareup:wire:4.0.1
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cpe:2.3:a:squareup:wire:4.1.0
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cpe:2.3:a:squareup:wire:4.1.1
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cpe:2.3:a:squareup:wire:4.2.0
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cpe:2.3:a:squareup:wire:4.3.0
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cpe:2.3:a:squareup:wire:4.4.0
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cpe:2.3:a:squareup:wire:4.4.1
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cpe:2.3:a:squareup:wire:4.4.2
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cpe:2.3:a:squareup:wire:4.4.3
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cpe:2.3:a:squareup:wire:4.5.0
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cpe:2.3:a:squareup:wire:4.5.1
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cpe:2.3:a:squareup:wire:4.5.2
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cpe:2.3:a:squareup:wire:4.5.3
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cpe:2.3:a:squareup:wire:4.5.4
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cpe:2.3:a:squareup:wire:4.5.5
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cpe:2.3:a:squareup:wire:4.5.6
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cpe:2.3:a:squareup:wire:4.6.0
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cpe:2.3:a:squareup:wire:4.6.1
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cpe:2.3:a:squareup:wire:4.6.2
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cpe:2.3:a:squareup:wire:4.7.0
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cpe:2.3:a:squareup:wire:4.7.1
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cpe:2.3:a:squareup:wire:4.7.2
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cpe:2.3:a:squareup:wire:4.8.0
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cpe:2.3:a:squareup:wire:4.8.1
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cpe:2.3:a:squareup:wire:4.9.0
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cpe:2.3:a:squareup:wire:4.9.1
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cpe:2.3:a:squareup:wire:4.9.10
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cpe:2.3:a:squareup:wire:4.9.11
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cpe:2.3:a:squareup:wire:4.9.2
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cpe:2.3:a:squareup:wire:4.9.3
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cpe:2.3:a:squareup:wire:4.9.4
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cpe:2.3:a:squareup:wire:4.9.5
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cpe:2.3:a:squareup:wire:4.9.6
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cpe:2.3:a:squareup:wire:4.9.7
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cpe:2.3:a:squareup:wire:4.9.8
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cpe:2.3:a:squareup:wire:4.9.9
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cpe:2.3:a:squareup:wire:5.0.0
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cpe:2.3:a:squareup:wire:5.1.0
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cpe:2.3:a:squareup:wire:5.2.0
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cpe:2.3:a:squareup:wire:5.2.1
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cpe:2.3:a:squareup:wire:5.3.0
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cpe:2.3:a:squareup:wire:5.3.1
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cpe:2.3:a:squareup:wire:5.3.10
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cpe:2.3:a:squareup:wire:5.3.11
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cpe:2.3:a:squareup:wire:5.3.2
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cpe:2.3:a:squareup:wire:5.3.3
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cpe:2.3:a:squareup:wire:5.3.4
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cpe:2.3:a:squareup:wire:5.3.5
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cpe:2.3:a:squareup:wire:5.3.6
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cpe:2.3:a:squareup:wire:5.3.7
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cpe:2.3:a:squareup:wire:5.3.8
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cpe:2.3:a:squareup:wire:5.3.9
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cpe:2.3:a:squareup:wire:5.4.0
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cpe:2.3:a:squareup:wire:5.5.0
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cpe:2.3:a:squareup:wire:5.5.1
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cpe:2.3:a:squareup:wire:6.0.0
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cpe:2.3:a:squareup:wire:6.1.0
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cpe:2.3:a:squareup:wire:6.2.0
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cpe:2.3:a:squareup:wire:7.0.0