CVE-2026-34202

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 49% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-chain version 6.0.1, a vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic (crash). This is triggered by sending a specially crafted V5 transaction that passes initial deserialization but fails during transaction ID calculation. This issue has been patched in zebrad version 4.3.0 and zebra-chain version 6.0.1.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
EPSS PROB
0.9%
EPSS %ILE
59th
KEV
Not listed

Published

March 31, 2026

Last Modified

July 24, 2026

Advisory Details (3)

Auto-updated Jun 10, 2026
Patch available. Sources: github_release, github.
generic

Zebra 4.3.0: Critical Security Fixes, ZIP-235 Support, and Performance Improvements - Zcash Foundation

https://zfnd.org/zebra-4-3-0-critical-security-fixes-zip-235-support-and-performance-improvements
githubMentions a patch (unverified)

CVE-2026-34202: Remote Denial of Service via Crafted V5 Transactions · Advisory · ZcashFoundation/zebra · GitHub

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-qp6f-w4r3-h8wg
github_release Patch Available

Zebra 4.3.0

Patch available: ZcashFoundation/zebra v4.3.0

https://github.com/ZcashFoundation/zebra/releases/tag/v4.3.0

Affected Packages

(2 across 1 ecosystem)
crates.io(2)
PackageVulnerable rangeFix by version rangeDependents
zebra-chain—
  • every version up to 6.0.1: fixed in 6.0.1
—
zebrad—
  • every version up to 4.3.0: fixed in 4.3.0
—

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 185 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:47 UTCEPSS rescore
  4. 2026-10-06 15:17 UTCEPSS rescore
  5. 2026-10-05 17:42 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-01 19:49 UTCEPSS rescore
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-28 13:51 UTCEPSS rescore
  11. 2026-09-27 13:48 UTCEPSS rescore
  12. 2026-09-26 15:58 UTCEPSS rescore
  13. 2026-09-26 00:26 UTCEPSS rescore
  14. 2026-09-21 14:49 UTCOSV refresh
  15. 2026-09-20 20:15 UTCEPSS rescore
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-17 19:30 UTCEPSS rescore
  19. 2026-09-16 14:08 UTCEPSS rescore
  20. 2026-09-16 05:15 UTCEPSS rescore
  21. 2026-09-15 03:11 UTCEPSS rescore
  22. 2026-09-12 15:01 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 09:37 UTCEPSS rescore
  25. 2026-09-10 09:34 UTCEPSS rescore
Show 75 more
  1. 2026-09-08 22:00 UTCEPSS rescore
  2. 2026-09-07 16:01 UTCEPSS rescore
  3. 2026-09-06 13:47 UTCEPSS rescore
  4. 2026-09-04 05:06 UTCEPSS rescore
  5. 2026-09-02 14:12 UTCEPSS rescore
  6. 2026-09-02 12:34 UTCOSV refresh
  7. 2026-09-01 13:53 UTCEPSS rescore
  8. 2026-09-01 04:39 UTCEPSS rescore
  9. 2026-08-30 19:17 UTCEPSS rescore
  10. 2026-08-30 01:22 UTCEPSS rescore
  11. 2026-08-28 21:41 UTCEPSS rescore
  12. 2026-08-27 14:25 UTCEPSS rescore
  13. 2026-08-26 14:46 UTCEPSS rescore
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-24 14:17 UTCEPSS rescore
  16. 2026-08-23 00:19 UTCEPSS rescore
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-19 17:03 UTCEPSS rescore
  21. 2026-08-18 13:48 UTCEPSS rescore
  22. 2026-08-17 13:47 UTCEPSS rescore
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 09:40 UTCEG score recompute
  25. 2026-08-16 02:14 UTCEPSS rescore
  26. 2026-08-15 01:30 UTCEPSS rescore
  27. 2026-08-14 06:03 UTCEG score recompute
  28. 2026-08-13 22:00 UTCEPSS rescore
  29. 2026-08-12 20:24 UTCEG score recompute
  30. 2026-08-12 13:50 UTCEPSS rescore
  31. 2026-08-11 20:37 UTCEG score recompute
  32. 2026-08-11 03:37 UTCEG score recompute
  33. 2026-08-11 00:00 UTCEPSS rescore
  34. 2026-08-09 18:22 UTCEG score recompute
  35. 2026-08-09 13:46 UTCEPSS rescore
  36. 2026-08-09 05:38 UTCEG score recompute
  37. 2026-08-08 16:37 UTCEPSS rescore
  38. 2026-08-08 04:27 UTCEG score recompute
  39. 2026-08-06 18:12 UTCEG score recompute
  40. 2026-08-06 13:46 UTCEPSS rescore
  41. 2026-08-06 00:36 UTCEG score recompute
  42. 2026-08-05 19:17 UTCEPSS rescore
  43. 2026-08-04 15:10 UTCEPSS rescore
  44. 2026-08-04 10:38 UTCEPSS rescore
  45. 2026-08-03 22:56 UTCEG score recompute
  46. 2026-08-03 10:36 UTCEPSS rescore
  47. 2026-08-02 14:58 UTCEG score recompute
  48. 2026-08-02 02:27 UTCEPSS rescore
  49. 2026-08-01 04:16 UTCEPSS rescore
  50. 2026-07-30 16:28 UTCEPSS rescore
  51. 2026-07-30 01:30 UTCEPSS rescore
  52. 2026-07-27 14:13 UTCEPSS rescore
  53. 2026-07-26 14:54 UTCEPSS rescore
  54. 2026-07-26 14:54 UTCEPSS rescore
  55. 2026-07-26 09:36 UTCEG score recompute
  56. 2026-07-25 14:18 UTCEPSS rescore
  57. 2026-07-25 14:18 UTCEPSS rescore
  58. 2026-07-24 14:17 UTCEPSS rescore
  59. 2026-07-24 14:17 UTCEPSS rescore
  60. 2026-07-23 14:18 UTCEPSS rescore
  61. 2026-07-23 14:18 UTCEPSS rescore
  62. 2026-07-23 03:09 UTCEG score recompute
  63. 2026-07-22 14:08 UTCEPSS rescore
  64. 2026-07-21 15:24 UTCEPSS rescore
  65. 2026-07-20 17:08 UTCEPSS rescore
  66. 2026-07-19 14:31 UTCEPSS rescore
  67. 2026-07-19 02:29 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-17 04:54 UTCOSV refresh
  70. 2026-07-16 17:03 UTCEPSS rescore
  71. 2026-07-15 16:57 UTCEPSS rescore
  72. 2026-07-15 16:57 UTCEPSS rescore
  73. 2026-07-15 02:00 UTCEPSS rescore
  74. 2026-07-13 22:30 UTCEPSS rescore
  75. 2026-07-13 06:13 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-34202?
CVE-2026-34202 is a high vulnerability published on March 31, 2026. ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-chain version 6.0.1, a vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic (crash). This is triggered by sending a specially crafted V5…
When was CVE-2026-34202 disclosed?
CVE-2026-34202 was first published on March 31, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34202 actively exploited?
CVE-2026-34202 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (59th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34202?
CVE-2026-34202 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-34202?
A fix for CVE-2026-34202 is available: update to the fixed version the vendor names in its advisory.

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