Undefined Behavior in zencashjs
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
Versions of `zencashjs` prior to 1.2.0 may cause loss of funds when used with cryptocurrency wallets. The package relies on a string comparison of the first two characters of a Horizen address to determine the destination address type of a transaction (P2PKH or P2SH). Due to the base58 address prefixes chosen in Horizen there exists the possibility of a clash of address prefixes for testnet P2PKH and mainnet P2SH addresses, testnet P2PKH addresses start with “zt” while a subset of mainnet P2SH addresses can also start with “zt”. The package interprets transactions sent to a “zt” P2SH address on mainnet as P2PKH transactions erroneously. Any funds sent to a mainnet P2SH multisignature address starting with “zt” will be sent to the wrong address and be lost. ## Recommendation Upgrade to version 1.2.0 or later.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | zencashjs (npm) | before 1.2.0 | 1.2.0 | Patch available | GHSA-xfrc-7mj2-5xh9 |
- zencashjs (npm) Vendor— Affected before 1.2.0 Fixed in 1.2.0 Patch available GHSA-xfrc-7mj2-5xh9
Remediation
- Fix · GHSA-xfrc-7mj2-5xh9 zencashjs (npm) Fixed in 1.2.0 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-xfrc-7mj2-5xh9
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences