High severity7.5GHSA Advisory· Published May 8, 2026· Updated May 8, 2026
CVE-2026-44498
CVE-2026-44498
Description
ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, Zebra's block validator undercounts transparent signature operations against the 20000-sigop block limit (MAX_BLOCK_SIGOPS), allowing it to accept blocks that zcashd rejects with bad-blk-sigops. A miner who produces such a block can split the network: Zebra nodes follow the offending chain while zcashd nodes do not. This issue has been patched in version 4.4.0.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
zebradcrates.io | < 4.4.0 | 4.4.0 |
Affected products
3- Range: < 4.4.0
Patches
Vulnerability mechanics
References
4- github.com/ZcashFoundation/zebra/security/advisories/GHSA-jv4h-j224-23ccnvdVendor AdvisoryWEB
- github.com/advisories/GHSA-jv4h-j224-23ccghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-44498ghsaADVISORY
- github.com/ZcashFoundation/zebra/releases/tag/v4.4.0nvdRelease NotesWEB
News mentions
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