CVE-2026-117601
CVE-2026-117601 · Electrum before 4.8.3 Missing Signature Verification of Mempool Transactions
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Electrum before 4.8.3 fails to verify signatures of wallet-owned inputs in unconfirmed mempool transactions, allowing malicious servers to replace a just-broadcast transaction with a conflicting one. Attackers can swallow the user's transaction and display an invalid zero-fee copy paying an attacker address, tricking users into RBF fee-bumping and signing it.
CVSS 9.3 · Crítica · Corrección disponible
- Publicación
- Actualización
Productos y versiones afectados
electrum
- Versiones
- ≥ 0, < 4.8.3: Afectada (semver)
- 4.8.3: No afectada (semver)
Actualiza a 4.8.3
Fuentes originales
- https://github.com/spesmilo/electrum/security/advisories/GHSA-6jp4-8v48-cc5v
- https://github.com/spesmilo/electrum/commit/90fe30822561e515a9d2d6e5a352cc07780999eb
- https://www.vulncheck.com/advisories/electrum-before-4.8.3-missing-signature-verification-of-mempool-transactions
- https://nvd.nist.gov/vuln/detail/CVE-2026-117601