Integer Overflow or Wraparound Affecting tools.jackson.dataformat:jackson-dataformat-protobuf package, versions [3.1.6, 3.1.8)[3.2.2, 3.2.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-TOOLSJACKSONDATAFORMAT-21762815
- published28 Oct 2026
- disclosed28 Oct 2026
- creditUnknown
Introduced: 28 Oct 2026
NewCVE-2026-110747 (opens in a new tab)How to fix?
Upgrade tools.jackson.dataformat:jackson-dataformat-protobuf to version 3.1.8, 3.2.4 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the ProtobufParser._readStringKey() method. An attacker can crash the process with an OutOfMemoryError by sending a message of about 8 bytes with a map key length near Integer.MAX_VALUE, which passes the buffer bounds check even when no key data follows and triggers an oversized allocation. Only applications that parse untrusted Protobuf input with a schema containing a map<string, V> field are affected, and StreamReadConstraints does not prevent it.