{"schema":"threatline.record/2","record":{"id":"CVE-2026-110747","aliases":["GHSA-fv7v-rrmh-4qcv"],"summary":"jackson-dataformat-protobuf: integer overflow in ProtobufParser._readStringKey() allows OutOfMemoryError from an 8-byte payload","details":"ProtobufParser._readStringKey() reads the length prefix of a protobuf map entry's string key into an attacker-controlled int and then checks (_inputPtr + len) <= _inputEnd using signed arithmetic. For values near Integer.MAX_VALUE the addition overflows to a negative value and the check passes even when the input contains no key data. The parser then calls _finishShortText(len), which expands the text buffer to the declared length via TextBuffer.expandCurrentSegment and Arrays.copyOf, throwing OutOfMemoryError: Requested array size exceeds VM limit.\n\n\n\nAn 8-byte malformed message containing a map entry with a declared key length of 0x7FFFFFFF is sufficient. Configured StreamReadConstraints, including maxStringLength, maxNameLength, maxDocumentLength and maxNestingDepth, do not prevent the failure. Applications running with -XX:+ExitOnOutOfMemoryError terminate the JVM.\n\n\n\nThis is the same integer-overflow pattern addressed for other call sites in the remediation associated with CVE-2026-104016 and CVE-2026-104017; the map-key call site was corrected on the 3.x branches only, leaving the corresponding 2.x branches unguarded. Release lines 2.18, 2.19 and 2.20 do not contain _readStringKey() and are not affected by this vector. No privileges or user interaction beyond the ability to submit data for parsing are required. The 3.0 release line and 3.1.0-3.1.5 / 3.2.0-3.2.1 do not contain _readStringKey() and are therefore not affected; the method first appears in 3.1.6 and 3.2.2, mirroring its introduction at 2.21.6 on the 2.x side.","categories":["Libraries & packages"],"product":"jackson-dataformat-protobuf","vendor":"FasterXML","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110747","source_modified_at":"2026-10-28T00:02:32.462Z","fetched_at":"2026-10-28T01:10:53.534015Z","product":"jackson-dataformat-protobuf","vendor":"FasterXML","versions":[{"status":"affected","version":"2.21.6","lessThan":"2.21.8","versionType":"maven"},{"status":"unaffected","version":"2.21.8","versionType":"maven"},{"status":"affected","version":"2.22.0","lessThan":"2.22.4","versionType":"maven"},{"status":"unaffected","version":"2.22.4","versionType":"maven"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110747","source_modified_at":"2026-10-28T00:02:32.462Z","fetched_at":"2026-10-28T01:10:53.534015Z","product":"jackson-dataformat-protobuf","vendor":"FasterXML","versions":[{"status":"affected","version":"3.1.6","lessThan":"3.1.8","versionType":"maven"},{"status":"unaffected","version":"3.1.8","versionType":"maven"},{"status":"affected","version":"3.2.2","lessThan":"3.2.4","versionType":"maven"},{"status":"unaffected","version":"3.2.4","versionType":"maven"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110747","source_modified_at":"2026-10-28T00:02:32.462Z","fetched_at":"2026-10-28T01:10:53.534015Z","package":{"name":"jackson-dataformat-protobuf","ecosystem":null},"version":"2.21.8","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110747","source_modified_at":"2026-10-28T00:02:32.462Z","fetched_at":"2026-10-28T01:10:53.534015Z","package":{"name":"jackson-dataformat-protobuf","ecosystem":null},"version":"2.22.4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110747","source_modified_at":"2026-10-28T00:02:32.462Z","fetched_at":"2026-10-28T01:10:53.534015Z","package":{"name":"jackson-dataformat-protobuf","ecosystem":null},"version":"3.1.8","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110747","source_modified_at":"2026-10-28T00:02:32.462Z","fetched_at":"2026-10-28T01:10:53.534015Z","package":{"name":"jackson-dataformat-protobuf","ecosystem":null},"version":"3.2.4","basis":"first unaffected version stated in the CVE record"}],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T00:02:32.462Z","modified_at":"2026-10-28T00:02:32.462Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110747","fetched_at":"2026-10-28T01:10:53.534015Z","source_modified_at":"2026-10-28T00:02:32.462Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/FasterXML/jackson-dataformats-binary/security/advisories/GHSA-fv7v-rrmh-4qcv","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-28T00:02:32.462Z","content_hash":"f9f8ea4f055bf9fc9c2c9cef798eba50da60ec9133a274a73eef932d5c01737e"}}