CVEvulnerability
CVE-2026-61695
7.5 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-23
- Last modified
- 2026-09-30
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-129
Description
Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.4.1 and 7.0.0-alpha04, Wire's Swift runtime ProtoReader.skipGroup(expectedEndTag:unknownFieldsWriter:) accepts a negative length for a LENGTH_DELIMITED field inside an unknown START_GROUP field. ProtoReader.readData() forwards the negative count to ReadBuffer.readData(count:), whose upper-bound-only check permits the value to reach Foundation Data(bytes:count:) and trigger an unrecoverable process trap instead of a catchable ProtoDecoder.Error. Any Swift process decoding untrusted protobuf bytes can be crashed without authentication, user interaction, or knowledge of the target schema. This issue is fixed in versions 6.4.1 and 7.0.0-alpha04.
Related
Weakness · CWE (1)
- CWE-129 Improper Validation of Array Index weakness
References
- https://github.com/square/wire/commit/24043b6b3a5e5974a978f2745b76d50b31407c1c github.com
- https://github.com/square/wire/commit/81ff7f24a6795d9a8be2e03f272b2d979a5d2c7e github.com
- https://github.com/square/wire/pull/3616 github.com
- https://github.com/square/wire/releases/tag/6.4.1 github.com
- https://github.com/square/wire/releases/tag/7.0.0-alpha04 github.com
- https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9 github.com
- https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9 github.com