CVE-2026-61695
highWire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/square/wire/commit/24043b6b3a5e5974a978f2745b76d50b31407c1c security-advisories@github.com
- https://github.com/square/wire/commit/81ff7f24a6795d9a8be2e03f272b2d979a5d2c7e security-advisories@github.com
- https://github.com/square/wire/pull/3616 security-advisories@github.com
- https://github.com/square/wire/releases/tag/6.4.1 security-advisories@github.com
- https://github.com/square/wire/releases/tag/7.0.0-alpha04 security-advisories@github.com
- https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9 security-advisories@github.com
- https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9 134c704f-9b21-4f2e-91b3-4a467353bcc0