CVE-2026-73541

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. NVD baseline CVSS 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

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

Allocation of Resources Without Limits or Throttling in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet through concurrent sponsored payments, denying service to legitimate payers once it is empty.

MPP.Methods.Tempo.FeePayerPolicy enforces its ceilings (max_gas, max_fee_per_gas, max_priority_fee_per_gas, the worst-case gas_limit * max_fee_per_gas <= max_total_fee budget cap, and a validity window) against one transaction at a time, and nothing accounts for exposure across concurrent requests. reserve_hash_atomic/2 is keyed on the transaction hash, so it prevents duplicate broadcast of the same signed transaction but not N distinct sponsored transactions carrying distinct expiring nonces. Committed sponsor exposure is therefore N times max_total_fee, bounded by nothing in the library, and the default 900 second validity window lets co-signed transactions stay broadcastable and uncounted for that entire period.

This issue affects mpp: from 0.2.0 before 0.12.0.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

August 19, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Aug 19, 2026
Patch available. Sources: github, github_commit.
github_commit

commit ddc46868fba5 (ZenHive/mpp)

Fix landed in ZenHive/mpp commit ddc46868fba5 — awaiting tagged release

https://github.com/ZenHive/mpp/commit/ddc46868fba57ccebb567c04709812b466123076
generic

OSV - Open Source Vulnerabilities

https://osv.dev/vulnerability/EEF-CVE-2026-73541
generic

CVE-2026-73541

https://cna.erlef.org/cves/CVE-2026-73541.html
github Patch Available

Tempo fee-payer sponsorship bounds each transaction individually but not aggregate exposure, allowing concurrent requests to drain the sponsor wallet · Advisory · ZenHive/mpp · GitHub

https://github.com/ZenHive/mpp/security/advisories/GHSA-j4j7-7xpr-c7cr

Vendor Advisories for CVE-2026-73541(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
mpp0.10.0 ... 0.9.0 (15 versions)0.12.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 107× 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 116 total refreshes for this CVE.

  1. 2026-09-19 13:27 UTCGHSA enrichment
  2. 2026-09-19 00:22 UTCEG score recompute
  3. 2026-09-19 00:22 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 11:18 UTCGHSA enrichment
  6. 2026-09-17 22:14 UTCEG score recompute
  7. 2026-09-17 22:14 UTCGHSA enrichment
  8. 2026-09-17 09:10 UTCGHSA enrichment
  9. 2026-09-16 20:06 UTCEG score recompute
  10. 2026-09-16 20:06 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:25 UTCEG score recompute
  13. 2026-09-16 05:25 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 16:21 UTCGHSA enrichment
  16. 2026-09-15 03:16 UTCEG score recompute
  17. 2026-09-15 03:16 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 14:12 UTCGHSA enrichment
  20. 2026-09-14 01:08 UTCEG score recompute
  21. 2026-09-14 01:08 UTCGHSA enrichment
  22. 2026-09-13 12:03 UTCGHSA enrichment
  23. 2026-09-12 22:59 UTCEG score recompute
  24. 2026-09-12 22:59 UTCGHSA enrichment
  25. 2026-09-12 15:02 UTCEPSS rescore
Show 75 more
  1. 2026-09-12 09:55 UTCGHSA enrichment
  2. 2026-09-11 20:50 UTCEG score recompute
  3. 2026-09-11 20:50 UTCGHSA enrichment
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 07:44 UTCGHSA enrichment
  6. 2026-09-10 18:39 UTCEG score recompute▼ 0.10
  7. 2026-09-10 18:39 UTCGHSA enrichment
  8. 2026-09-10 18:37 UTCNVD updateCVSS v3 → 8.2
  9. 2026-09-10 17:49 UTCEG score recompute
  10. 2026-09-10 17:49 UTCGHSA enrichment
  11. 2026-09-10 09:35 UTCEPSS rescore
  12. 2026-09-10 04:45 UTCGHSA enrichment
  13. 2026-09-09 15:41 UTCGHSA enrichment
  14. 2026-09-09 02:35 UTCEG score recompute
  15. 2026-09-09 02:35 UTCGHSA enrichment
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-07 22:38 UTCEG score recompute
  18. 2026-09-07 22:38 UTCGHSA enrichment
  19. 2026-09-07 09:33 UTCGHSA enrichment
  20. 2026-09-06 20:25 UTCEG score recompute
  21. 2026-09-06 20:25 UTCGHSA enrichment
  22. 2026-09-06 13:48 UTCEPSS rescore
  23. 2026-09-06 07:20 UTCGHSA enrichment
  24. 2026-09-05 18:16 UTCEG score recompute
  25. 2026-09-05 18:16 UTCGHSA enrichment
  26. 2026-09-05 04:57 UTCGHSA enrichment
  27. 2026-09-04 15:53 UTCEG score recompute
  28. 2026-09-04 15:53 UTCGHSA enrichment
  29. 2026-09-04 05:07 UTCEPSS rescore
  30. 2026-09-04 02:48 UTCGHSA enrichment
  31. 2026-09-03 13:39 UTCGHSA enrichment
  32. 2026-09-03 00:30 UTCEG score recompute
  33. 2026-09-03 00:29 UTCGHSA enrichment
  34. 2026-09-02 14:12 UTCEPSS rescore
  35. 2026-09-02 11:10 UTCGHSA enrichment
  36. 2026-09-01 22:04 UTCEG score recompute
  37. 2026-09-01 22:04 UTCGHSA enrichment
  38. 2026-09-01 13:54 UTCEPSS rescore
  39. 2026-09-01 08:59 UTCEG score recompute
  40. 2026-09-01 08:58 UTCGHSA enrichment
  41. 2026-09-01 04:40 UTCEPSS rescore
  42. 2026-09-01 04:40 UTCEPSS rescore
  43. 2026-08-31 19:48 UTCGHSA enrichment
  44. 2026-08-31 06:10 UTCEG score recompute
  45. 2026-08-31 06:10 UTCGHSA enrichment
  46. 2026-08-30 19:18 UTCEPSS rescore
  47. 2026-08-30 19:17 UTCEPSS rescore
  48. 2026-08-30 17:03 UTCGHSA enrichment
  49. 2026-08-30 03:59 UTCEG score recompute
  50. 2026-08-30 03:59 UTCGHSA enrichment
  51. 2026-08-30 01:22 UTCEPSS rescore
  52. 2026-08-29 14:54 UTCGHSA enrichment
  53. 2026-08-29 01:49 UTCEG score recompute
  54. 2026-08-29 01:49 UTCGHSA enrichment
  55. 2026-08-28 21:42 UTCEPSS rescore
  56. 2026-08-28 04:44 UTCGHSA enrichment
  57. 2026-08-27 15:40 UTCEG score recompute
  58. 2026-08-27 15:40 UTCGHSA enrichment
  59. 2026-08-27 14:25 UTCEPSS rescore
  60. 2026-08-27 02:31 UTCEG score recompute
  61. 2026-08-27 02:31 UTCGHSA enrichment
  62. 2026-08-26 14:47 UTCEPSS rescore
  63. 2026-08-26 13:27 UTCGHSA enrichment
  64. 2026-08-26 00:18 UTCEG score recompute
  65. 2026-08-26 00:18 UTCGHSA enrichment
  66. 2026-08-25 13:49 UTCEPSS rescore
  67. 2026-08-25 11:11 UTCGHSA enrichment
  68. 2026-08-24 22:06 UTCEG score recompute
  69. 2026-08-24 22:06 UTCGHSA enrichment
  70. 2026-08-24 09:01 UTCGHSA enrichment
  71. 2026-08-23 19:57 UTCGHSA enrichment
  72. 2026-08-23 06:52 UTCEG score recompute
  73. 2026-08-23 06:52 UTCGHSA enrichment
  74. 2026-08-23 00:19 UTCEPSS rescore
  75. 2026-08-22 17:48 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-73541?
CVE-2026-73541 is a high vulnerability published on August 19, 2026. Allocation of Resources Without Limits or Throttling in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet through concurrent sponsored payments, denying service to legitimate payers once it is empty. MPP.Methods.Tempo.FeePayerPolicy enforces its ceilings (maxgas,…
When was CVE-2026-73541 disclosed?
CVE-2026-73541 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73541 actively exploited?
CVE-2026-73541 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.9% of all scored CVEs.
What is the CVSS score of CVE-2026-73541?
CVE-2026-73541 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-73541?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73541, 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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