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: 0.6%CVSS: 8.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
8.2HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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 rangeFix by version rangeDependents
mpp0.10.0 ... 0.9.0 (15 versions)
  • 0.2.0 up to 0.12.0: fixed in 0.12.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 99× 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 165 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

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 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 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-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?
A fix for CVE-2026-73541 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73541 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73541

Explore →

Is Your Infrastructure Affected by CVE-2026-73541?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs