Vulnerability · Published Oct 30, 2026 · Assigned by GitHub_M
CVE-2026-61694go-xrpl: ParseMPTAmountBinary: positive MPT amount silently decoded as negative (int64 wrap)
Low 3.7
In plain English
A low-severity integer overflow in go-xrpl from LeJamon. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://github.com/LeJamon/go-xrpl/security/advisories/GHSA-j5cw-qr86-mmv7 x_refsource_CONFIRM
- https://github.com/LeJamon/go-xrpl/pull/1093 x_refsource_MISC
- https://github.com/LeJamon/go-xrpl/commit/9dbd3935ed6c54f0232f2291edf9c012a0900dd5 x_refsource_MISC