CVE-2026-45799
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
com.squareup.wire:wire-runtime-jvmMaven | < 6.3.0 | 6.3.0 |
com.squareup.wire:wire-runtimeMaven | < 6.3.0 | 6.3.0 |
com.squareup.wire:wire-runtimeMaven | >= 7.0.0-alpha01, < 7.0.0-alpha03 | 7.0.0-alpha03 |
com.squareup.wire:wire-runtime-jvmMaven | >= 7.0.0-alpha01, < 7.0.0-alpha03 | 7.0.0-alpha03 |
Affected products
4Patches
Vulnerability mechanics
References
9- github.com/square/wire/commit/47d5b0dba53935d5332cd41a80a353b3fc90e7b0nvdPatchWEB
- github.com/square/wire/commit/e4e56fab38a547d9625f05c97f1d8f0bcc3a5773nvdPatchWEB
- github.com/advisories/GHSA-7xpr-hc2w-34m9ghsaADVISORY
- github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9nvdVendor AdvisoryExploitWEB
- nvd.nist.gov/vuln/detail/CVE-2026-45799ghsaADVISORY
- github.com/square/wire/pull/3595nvdIssue TrackingWEB
- github.com/square/wire/pull/3597nvdIssue TrackingWEB
- github.com/square/wire/releases/tag/6.3.0nvdRelease NotesWEB
- github.com/square/wire/releases/tag/7.0.0-alpha03nvdRelease NotesWEB
News mentions
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