ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0 and prior to zebra-script version 6.0.0, the fix for CVE-2026-41583 introduced a separate issue due to insufficient error handling of the case where the sighash type is invalid, during sighash computation. Instead of returning an error, the normal flow would resume, and the input sighash buffer would be left untouched. In scenarios where a previous signature validation could leave a valid sighash in the buffer, an invalid hash-type could be incorrectly accepted, which would create a consensus split between Zebra and zcashd nodes. This issue has been patched in zebrad version 4.4.0 and zebra-script version 6.0.0.
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Affected Vendors & Products
References
History
Fri, 08 May 2026 18:45:00 +0000
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Zfnd
Zfnd zebra-script Zfnd zebrad |
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| CPEs | cpe:2.3:a:zfnd:zebra-script:*:*:*:*:*:rust:*:* cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:* |
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| Vendors & Products |
Zfnd
Zfnd zebra-script Zfnd zebrad |
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cvssV3_1
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Fri, 08 May 2026 16:15:00 +0000
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ssvc
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| Description | ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0 and prior to zebra-script version 6.0.0, the fix for CVE-2026-41583 introduced a separate issue due to insufficient error handling of the case where the sighash type is invalid, during sighash computation. Instead of returning an error, the normal flow would resume, and the input sighash buffer would be left untouched. In scenarios where a previous signature validation could leave a valid sighash in the buffer, an invalid hash-type could be incorrectly accepted, which would create a consensus split between Zebra and zcashd nodes. This issue has been patched in zebrad version 4.4.0 and zebra-script version 6.0.0. | |
| Title | ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling due to Stale Buffer | |
| Weaknesses | CWE-347 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-05-08T15:08:08.516Z
Updated: 2026-05-08T15:48:10.020Z
Reserved: 2026-05-06T18:28:20.886Z
Link: CVE-2026-44497
Updated: 2026-05-08T15:48:03.193Z
Status : Analyzed
Published: 2026-05-08T15:17:01.493
Modified: 2026-05-08T18:42:24.100
Link: CVE-2026-44497
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