An untrusted p2p peer can cause a node to panic by announcing an election macro block whose validators set contains an invalid compressed BLS voting key.
Hashing an election macro header hashes validators and reaches Validators::voting_keys(), which calls validator.voting_key.uncompress().unwrap() and panics on invalid bytes.
The patch for this vulnerability is included as part of v1.3.0.
No known workarounds.
{
"cwe_ids": [
"CWE-252",
"CWE-755"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-22T19:19:28Z",
"nvd_published_at": "2026-04-22T20:16:41Z",
"severity": "HIGH"
}