Answer in brief
CVE-2023-33964 records a High severity (CVSS 8.6) vulnerability in mx-chain-go does not treat invalid transaction with wrong username correctly. The current sources do not mark it as known exploited. The current feed maps github.com/multiversx/mx-chain-go (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps github.com/multiversx/mx-chain-go (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| github.com/multiversx/mx-chain-gogo | >=0 <1.4.16 | 1.4.16 |
Published upstream
Jun 2, 2023
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
### Impact Metachain cannot process a cross-shard miniblock. 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. ### Patches Introduce processIfTxErrorCrossShard for metachain transaction processor. ### Workarounds No ### References No
Quoted source text, attributed separately from HOL analysis.