CVE-2026-59695

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 57% 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: cna:eef, epss
Trending — 3 sources updated this weekElevated
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.3Exploit: Elevated riskExposed: 0

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

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price.

When the mpp Elixir library is configured as fee payer (fee_payer: true), MPP.Tempo.Transaction.cosign_fee_payer/3 re-signs the client-supplied base fields of the 0x76 AASigned envelope verbatim, including max_fee_per_gas and max_priority_fee_per_gas, without validating that they are within reasonable bounds. A malicious client embeds arbitrarily large values for these fields in the signed envelope. The server co-signs and broadcasts the transaction. The effective_gas_price billed against the fee-payer wallet is derived from the attacker-supplied ceilings, so the server pays those inflated per-gas rates out of its own wallet. A single crafted request can drain the wallet entirely, after which the server can no longer sponsor gas for legitimate payment requests.

This issue affects mpp: from 0.2.0 before 0.6.0.

CVSS v3
8.3
EG Score
8.3(medium)
EG Risk
53(Track*)
EG Risk 53/100SSVC: Track*

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
Severity83% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 18, 2026

Advisory Details (4)

Auto-updated Jul 17, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
generic

OSV - Open Source Vulnerabilities

https://osv.dev/vulnerability/EEF-CVE-2026-59695
github Patch Available🟡 PoC Available

Gas Draining with no limit · Advisory · ZenHive/mpp · GitHub

https://github.com/ZenHive/mpp/security/advisories/GHSA-vv77-66rf-pm86
github_commit

commit 5d6338e23340 (ZenHive/mpp)

Fix landed in ZenHive/mpp commit 5d6338e23340 — awaiting tagged release

https://github.com/ZenHive/mpp/commit/5d6338e2334084c5f2a78cfcca474830733ed7e8
generic

Unbounded max_fee_per_gas in mpp Tempo fee-payer enables single-request wallet drain | Erlang Ecosystem Foundation CNA

https://cna.erlef.org/cves/CVE-2026-59695.html

Vendor Advisories for CVE-2026-59695(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Hex(1)
PackageVulnerable rangeFixed inDependents
mpp0.2.0, 0.3.0, 0.3.1, 0.3.2, 0.4.00.6.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 80× 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 176 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-59695?
CVE-2026-59695 is a high vulnerability published on July 17, 2026. Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer (feepayer: true),…
When was CVE-2026-59695 disclosed?
CVE-2026-59695 was first published in the National Vulnerability Database on July 17, 2026, with the most recent update on July 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59695 actively exploited?
CVE-2026-59695 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.2% of all scored CVEs.
What is the CVSS score of CVE-2026-59695?
CVE-2026-59695 has a CVSS v4.0 base score of 8.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-59695?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59695, 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.

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