CVE-2023-33964

HighCVSS 8.6

Published: 31/05/2023(UTC)Updated: 17/06/2026(UTC)Translated: 18/06/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.57%

42th percentile - higher than 42% of all known CVEs

Summary

In versions prior to 1.4.16, the metachain in the mx-chain-go implementation incorrectly processed transactions with an invalid username, which could lead to the halting of block notarization from shards.

Risk Assessment

The organization may face issues with block notarization, potentially affecting the integrity of data in the MultiversX chain.

Recommendation

It is recommended to upgrade to version 1.4.16 or later to apply the patch that resolves this issue.

Other vulnerabilities in mx-chain-go

CVE-2023-34458High
A vulnerability in mx-chain-go, the official implementation of the MultiversX blockchain protocol, allowed for the sender account nonce of an inner transaction to be increased if the inner transaction failed. This could lead to a limited DoS attack on a targeted account.

Original NVD description (English source)

mx-chain-go is an implementation of the MultiversX blockchain protocol written in the Go language. Metachain cannot process a cross-shard miniblock. Prior to version 1.4.16, an invalid transaction with the wrong username on metachain is not treated correctly on the metachain transaction processor. This is strictly a processing issue that could have happened on MultiversX chain. If an error like this had occurred, the metachain would have stopped notarizing blocks from the shard chains. The resuming of notarization is possible only after applying a patched binary version. A patch in version 1.4.16 introduces `processIfTxErrorCrossShard` for the metachain transaction processor. There are no known workarounds for this issue.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS