CVE-2026-44500

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 72% 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
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0, prior to zebra-chain version 7.0.0, and prior to zebra-network version 6.0.0, several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter protocol or consensus limits were enforced. An unauthenticated or post-handshake peer could therefore force the node to preallocate and parse for orders of magnitude more data than the protocol intended, across headers messages, equihash solutions in block headers, Sapling spend vectors in V5/V4 transactions, and coinbase script bytes in blocks. This issue has been patched in zebrad version 4.4.0, zebra-chain version 7.0.0, and zebra-network version 6.0.0.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
28.3%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 8, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
Patch available. Sources: github.
github Patch Available

Allocation Amplification in Inbound Network Deserializers · Advisory · ZcashFoundation/zebra · GitHub

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-438q-jx8f-cccv

Affected Packages

(3 across 1 ecosystem)
crates.io(3)
PackageVulnerable rangeFixed inDependents
zebra-chain—7.0.0—
zebrad—4.4.0—
zebra-network—6.0.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 37× 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.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44500?
CVE-2026-44500 is a medium vulnerability published on May 8, 2026. ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0, prior to zebra-chain version 7.0.0, and prior to zebra-network version 6.0.0, several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter…
When was CVE-2026-44500 disclosed?
CVE-2026-44500 was first published in the National Vulnerability Database on May 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44500 actively exploited?
CVE-2026-44500 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44500?
CVE-2026-44500 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-44500?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44500, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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