CVE-2026-104434 json
Zebra before 8.0.0 Denial of Service via z_listunifiedreceivers RPC
published 4mo ago modified last mo. also EUVD-2026-91444 , GHSA-c8w6-x74f-vmg3
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
ZcashFoundation Zebra zebra-rpc before 8.0.0 and zebrad before 4.5.0 contain a reachable assertion in the z_listunifiedreceivers RPC handler, which calls expect() on Sapling receiver parsing that fails for Unified Addresses carrying invalid Jubjub points. Authenticated RPC clients can submit such an address to abort the zebrad process, repeatably keeping the node offline.
Patch / fix
- crates.io zebra-rpc 8.0.0
- crates.io zebrad 4.5.0
- ZcashFoundation zebra 4.5.0, 8.0.0
Is CVE-2026-104434 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | zebra-rpc | <8.0.0 |
8.0.0 |
| crates.io | zebrad | <4.5.0 |
4.5.0 |
Affected products
- ZcashFoundation zebra
Classification
References
-
github.com
/ZcashFoundation/zebra/security/advisories/GHSA-c8w6-x74f-vmg3
vendor-advisory, web
-
vulncheck.com
/advisories/zebra-before-8.0.0-denial-of-service-via-z-listunifiedreceivers-rpc
third-party-advisory
-
github.com
/ZcashFoundation/zebra
package
-
github.com
/ZcashFoundation/zebra/blob/d4cd662c716382f6397d2a730148025a1ca79fec/Cargo.toml#L305
web
-
github.com
/ZcashFoundation/zebra/blob/d4cd662c716382f6397d2a730148025a1ca79fec/zebra-rpc/src/methods.rs#L2867-L2914
web
Sources
- CVE List CVE-2026-104434
- GitHub Advisory GHSA-c8w6-x74f-vmg3
- NVD CVE-2026-104434
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.