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CVE-2026-59695

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:daf1223c84f69b13b34f4085946f28435a28595d8d4f1a0768d37e17ce2cf02f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.MPP.Tempo.Transaction'"],"packageName":"ZenHive/mpp","packageURL":"pkg:github/ZenHive/mpp","product":"mpp","programFiles":["lib/mpp/tempo/transaction.ex"],"programRoutines":[{"name":"'Elixir.MPP.Tempo.Transaction':cosign_fee_payer/3"}],"repo":"https://github.com/ZenHive/mpp","vendor":"ZenHive","versions":[{"lessThan":"5d6338e2334084c5f2a78cfcca474830733ed7e8","status":"affected","version":"d29d54e507918db00a5b65d90136b73166c017d7","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/affected/1

{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.MPP.Tempo.Transaction'"],"packageName":"mpp","packageURL":"pkg:hex/mpp","product":"mpp","programFiles":["lib/mpp/tempo/transaction.ex"],"programRoutines":[{"name":"'Elixir.MPP.Tempo.Transaction':cosign_fee_payer/3"}],"repo":"https://github.com/ZenHive/mpp","vendor":"ZenHive","versions":[{"lessThan":"0.6.0","status":"affected","version":"0.2.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.MPP.Tempo.Transaction'"],"packageName":"ZenHive/mpp","packageURL":"pkg:github/ZenHive/mpp","product":"mpp","programFiles":["lib/mpp/tempo/transaction.ex"],"programRoutines":[{"name":"'Elixir.MPP.Tempo.Transaction':cosign_fee_payer/3"}],"repo":"https://github.com/ZenHive/mpp","vendor":"ZenHive","versions":[{"lessThan":"5d6338e2334084c5f2a78cfcca474830733ed7e8","status":"affected","version":"d29d54e507918db00a5b65d90136b73166c017d7","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/affected/1
{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.MPP.Tempo.Transaction'"],"packageName":"mpp","packageURL":"pkg:hex/mpp","product":"mpp","programFiles":["lib/mpp/tempo/transaction.ex"],"programRoutines":[{"name":"'Elixir.MPP.Tempo.Transaction':cosign_fee_payer/3"}],"repo":"https://github.com/ZenHive/mpp","vendor":"ZenHive","versions":[{"lessThan":"0.6.0","status":"affected","version":"0.2.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-1284","description":"CWE-1284 Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-59695.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/ZenHive/mpp/commit/5d6338e2334084c5f2a78cfcca474830733ed7e8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/ZenHive/mpp/security/advisories/GHSA-vv77-66rf-pm86"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/adp/0/references/0
{"tags":["vendor-advisory","related"],"url":"https://github.com/ZenHive/mpp/security/advisories/GHSA-vv77-66rf-pm86"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-59695"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:abaa1dc6f046fb1eaa58615c92bdf4bae26f963b8ef5614c951f19fd5b2e4f4e · sha256:29c26d4270fec0a1… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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