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CVE-2026-45799
7.5 HIGH
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): High (H)
Activity log
- Created & dismissed (max. allowed matches exceeded) suggestion
Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service
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.
References
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https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9 x_refsource_CONFIRM
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https://github.com/square/wire/pull/3595 x_refsource_MISC
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https://github.com/square/wire/pull/3597 x_refsource_MISC
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https://github.com/square/wire/releases/tag/6.3.0 x_refsource_MISC
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https://github.com/square/wire/releases/tag/7.0.0-alpha03 x_refsource_MISC
Affected products
wire
- ==< 6.3.0
- ==>= 7.0.0-alpha01, < 7.0.0-alpha03