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CVE-2026-59247

Insufficient Verification of Data Authenticity vulnerability in Gleam allows an adversary in the middle to substitute forged Hex package contents during dependency resolution. During dependency resolution Gleam fetches package metadata from the signature-verified Hex repository, which covers each release's dependency requirements and SHA-256 outer_checksum. After resolving versions, gleam_cli::dependencies::lookup_package makes a second request to the unsigned Hex API through gleam_core::hex::g
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8176cb5bbf13eb2510389d9f5a186c66b44fc5ed736d876bb85c89a3a3e8b116
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"collectionURL":"https://ghcr.io","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["gleam_cli::dependencies","gleam_cli::dependencies::dependency_manager"],"packageName":"gleam-lang/gleam","packageURL":"pkg:oci/gleam?repository_url=ghcr.io/gleam-lang","product":"gleam","programFiles":["compiler-cli/src/dependencies.rs","compiler-cli/src/dependencies/dependency_manager.rs"],"programRoutines":[{"name":"gleam_cli::dependencies::lookup_package"},{"name":"gleam_cli::dependencies::dependency_manager::DependencyManager::perform_version_resolution"}],"vend…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/affected/2

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["gleam_cli::dependencies","gleam_cli::dependencies::dependency_manager"],"packageName":"gleam-lang/gleam","packageURL":"pkg:github/gleam-lang/gleam","product":"gleam","programFiles":["compiler-cli/src/dependencies.rs","compiler-cli/src/dependencies/dependency_manager.rs"],"programRoutines":[{"name":"gleam_cli::dependencies::lookup_package"},{"name":"gleam_cli::dependencies::dependency_manager::DependencyManager::perform_version_resolution"}],"repo":"https://github…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/affected/1

{"collectionURL":"https://gleam.run","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["gleam_cli::dependencies","gleam_cli::dependencies::dependency_manager"],"packageName":"gleam.run/gleam","packageURL":"pkg:sid/gleam.run/gleam","product":"gleam","programFiles":["compiler-cli/src/dependencies.rs","compiler-cli/src/dependencies/dependency_manager.rs"],"programRoutines":[{"name":"gleam_cli::dependencies::lookup_package"},{"name":"gleam_cli::dependencies::dependency_manager::DependencyManager::perform_version_resolution"}],"repo":"https://github.com/g…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/affected/0

Affected products and versions

3 source assertions
{"collectionURL":"https://ghcr.io","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["gleam_cli::dependencies","gleam_cli::dependencies::dependency_manager"],"packageName":"gleam-lang/gleam","packageURL":"pkg:oci/gleam?repository_url=ghcr.io/gleam-lang","product":"gleam","programFiles":["compiler-cli/src/dependencies.rs","compiler-cli/src/dependencies/dependency_manager.rs"],"programRoutines":[{"name":"gleam_cli::dependencies::lookup_package"},{"name":"gleam_cli::dependencies::dependency_manager::DependencyManager::perform_version_resolution"}],"vend…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/affected/2
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["gleam_cli::dependencies","gleam_cli::dependencies::dependency_manager"],"packageName":"gleam-lang/gleam","packageURL":"pkg:github/gleam-lang/gleam","product":"gleam","programFiles":["compiler-cli/src/dependencies.rs","compiler-cli/src/dependencies/dependency_manager.rs"],"programRoutines":[{"name":"gleam_cli::dependencies::lookup_package"},{"name":"gleam_cli::dependencies::dependency_manager::DependencyManager::perform_version_resolution"}],"repo":"https://github…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/affected/1
{"collectionURL":"https://gleam.run","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["gleam_cli::dependencies","gleam_cli::dependencies::dependency_manager"],"packageName":"gleam.run/gleam","packageURL":"pkg:sid/gleam.run/gleam","product":"gleam","programFiles":["compiler-cli/src/dependencies.rs","compiler-cli/src/dependencies/dependency_manager.rs"],"programRoutines":[{"name":"gleam_cli::dependencies::lookup_package"},{"name":"gleam_cli::dependencies::dependency_manager::DependencyManager::perform_version_resolution"}],"repo":"https://github.com/g…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.6,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-345","description":"CWE-345 Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-59247.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/gleam-lang/gleam/commit/c9c0d48c123c8abae6db8dd61b25ccb427ed3d35"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/references/3
{"tags":["vendor-advisory","related"],"url":"https://github.com/gleam-lang/gleam/security/advisories/GHSA-4vvc-458m-r82g"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/references/0
{"tags":["related"],"url":"https://github.com/hexpm/specifications/blob/main/registry-v2.md"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /containers/cna/references/4
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-59247"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:940f0448c17e920b5bcceda18a12f82f0963c373c17f1c68427aa9934478919e · sha256:c63df8ba83083477… · /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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