CVE-2026-61694
Dashboard / Vulnerabilities / CVE-2026-61694
Summary: go-xrpl: ParseMPTAmountBinary: positive MPT amount silently decoded as negative (int64 wrap)
Details: go-xrpl is a Go implementation of the XRP Ledger protocol. In versions through the June 18, 2026 revision identified by the advisory, `ParseMPTAmountBinary` in `internal/ledger/state/ripple_state.go` converts the eight-byte MPT magnitude using `num.Int64()` without checking that it fits in 63 bits. A positive magnitude of at least 2^63 silently wraps into a negative amount without an error. `ParseEscrow` passes 33-byte `sfAmount` fields to the parser and stores `MPTRaw()` in `EscrowData.MPTAmount`, causing incorrect downstream calculations and divergence from rippled's interpretation of the same escrow entry. Independently, `readMPTAmount` in `internal/tx/ledgerfields/decode_stream.go` accepts over-limit magnitudes and surfaces large decimal strings without enforcing the maximum signed 64-bit value. The public codec in codec/binarycodec/types/amount.go already rejects these values, leaving the internal decoders inconsistent with that safe path. A source fix is available in commit 9dbd3935ed6c54f0232f2291edf9c012a0900dd5.
References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61694.json, https://github.com/LeJamon/go-xrpl/security/advisories/GHSA-j5cw-qr86-mmv7, https://nvd.nist.gov/vuln/detail/CVE-2026-61694, https://github.com/LeJamon/go-xrpl/commit/9dbd3935ed6c54f0232f2291edf9c012a0900dd5, https://github.com/LeJamon/go-xrpl/pull/1093
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