{"affected":[{"defaultStatus":"unaffected","ecosystem":"https://repo.maven.apache.org/maven2","packageName":"com.fasterxml.jackson.dataformat:jackson-dataformat-protobuf","product":"jackson-dataformat-protobuf","source":"CNA: HeroDevs","vendor":"FasterXML","versions":[{"lessThan":"2.21.8","status":"affected","version":"2.21.6","versionType":"maven"},{"status":"unaffected","version":"2.21.8","versionType":"maven"},{"lessThan":"2.22.4","status":"affected","version":"2.22.0","versionType":"maven"},{"status":"unaffected","version":"2.22.4","versionType":"maven"}]},{"defaultStatus":"unaffected","ecosystem":"https://repo.maven.apache.org/maven2","packageName":"tools.jackson.dataformat:jackson-dataformat-protobuf","product":"jackson-dataformat-protobuf","source":"CNA: HeroDevs","vendor":"FasterXML","versions":[{"lessThan":"3.1.8","status":"affected","version":"3.1.6","versionType":"maven"},{"status":"unaffected","version":"3.1.8","versionType":"maven"},{"lessThan":"3.2.4","status":"affected","version":"3.2.2","versionType":"maven"},{"status":"unaffected","version":"3.2.4","versionType":"maven"}]}],"cveId":"CVE-2026-110747","cwes":["CWE-190"],"description":"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.","epss":{"date":"2026-11-06","percentile":0.33043,"score":0.00387},"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"CNA: HeroDevs","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793990348081,"publishedAt":1793145752462,"references":[{"source":"CNA: HeroDevs","tags":["vendor-advisory"],"url":"https://github.com/FasterXML/jackson-dataformats-binary/security/advisories/GHSA-fv7v-rrmh-4qcv"}],"remediation":[],"revision":"94e9022c622452e7f8d384f73bf1387407a8da42e2857c9ba81a079d3f95d7af","sources":[{"modifiedAt":1793990348081,"name":"CNA: HeroDevs","retrievedAt":1793992157570,"url":"https://www.cve.org/CVERecord?id=CVE-2026-110747"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793992180975,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110747"}],"ssvc":{"assessedAt":1793988815774,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"jackson-dataformat-protobuf: integer overflow in ProtobufParser._readStringKey() allows OutOfMemoryError from an 8-byte payload","updatedAt":1793992180975}