{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45799","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-13T08:19:32.603Z","datePublished":"2026-07-17T19:49:30.331Z","dateUpdated":"2026-07-20T13:51:25.748Z"},"containers":{"cna":{"title":"Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service","problemTypes":[{"descriptions":[{"cweId":"CWE-129","lang":"en","description":"CWE-129: Improper Validation of Array Index","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9"},{"name":"https://github.com/square/wire/pull/3595","tags":["x_refsource_MISC"],"url":"https://github.com/square/wire/pull/3595"},{"name":"https://github.com/square/wire/pull/3597","tags":["x_refsource_MISC"],"url":"https://github.com/square/wire/pull/3597"},{"name":"https://github.com/square/wire/commit/47d5b0dba53935d5332cd41a80a353b3fc90e7b0","tags":["x_refsource_MISC"],"url":"https://github.com/square/wire/commit/47d5b0dba53935d5332cd41a80a353b3fc90e7b0"},{"name":"https://github.com/square/wire/commit/e4e56fab38a547d9625f05c97f1d8f0bcc3a5773","tags":["x_refsource_MISC"],"url":"https://github.com/square/wire/commit/e4e56fab38a547d9625f05c97f1d8f0bcc3a5773"},{"name":"https://github.com/square/wire/releases/tag/6.3.0","tags":["x_refsource_MISC"],"url":"https://github.com/square/wire/releases/tag/6.3.0"},{"name":"https://github.com/square/wire/releases/tag/7.0.0-alpha03","tags":["x_refsource_MISC"],"url":"https://github.com/square/wire/releases/tag/7.0.0-alpha03"}],"affected":[{"vendor":"square","product":"wire","versions":[{"version":"< 6.3.0","status":"affected"},{"version":">= 7.0.0-alpha01, < 7.0.0-alpha03","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-17T19:49:30.331Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-7xpr-hc2w-34m9","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-20T13:51:12.411548Z","id":"CVE-2026-45799","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-20T13:51:25.748Z"}}]}}