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CVE-2026-43965

Path traversal vulnerability in Gleam's dependency management allows arbitrary directory deletion via malicious build/packages/packages.toml content. Package keys read from build/packages/packages.toml by LocalPackages::read_from_disc are passed without validation to paths.build_packages_package(), which constructs a filesystem path by joining the project build directory with the attacker-controlled key. The resulting path is then passed to fs::delete_directory (which calls remove_dir_all). No
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1eda3a1266bf60ebc4e74e7e74318affced63340031fee57f0753f638ecb514f
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://github.com","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["compiler-cli"],"packageName":"gleam-lang/gleam","packageURL":"pkg:github/gleam-lang/gleam","product":"Gleam","programFiles":["compiler-cli/src/dependencies.rs"],"programRoutines":[{"name":"compiler_cli::dependencies::remove_extra_packages"},{"name":"compiler_cli::dependencies::LocalPackages::read_from_disc"},{"name":"compiler_cli::dependencies::LocalPackages::extra_local_packages"}],"repo":"https://github.com/gleam-lang/gleam","vendor":"Gleam","versions":[{"lessT…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/affected/1

{"collectionURL":"https://ghcr.io","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["compiler-cli"],"packageName":"gleam-lang/gleam","packageURL":"pkg:oci/gleam?repository_url=ghcr.io/gleam-lang","product":"Gleam","programFiles":["compiler-cli/src/dependencies.rs"],"programRoutines":[{"name":"compiler_cli::dependencies::remove_extra_packages"},{"name":"compiler_cli::dependencies::LocalPackages::read_from_disc"},{"name":"compiler_cli::dependencies::LocalPackages::extra_local_packages"}],"vendor":"Gleam","versions":[{"lessThan":"v1.17.0-elixir","statu…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/affected/2

{"cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["compiler-cli"],"packageName":"gleam","packageURL":"pkg:sid/gleam.run/gleam","product":"Gleam","programFiles":["compiler-cli/src/dependencies.rs"],"programRoutines":[{"name":"compiler_cli::dependencies::remove_extra_packages"},{"name":"compiler_cli::dependencies::LocalPackages::read_from_disc"},{"name":"compiler_cli::dependencies::LocalPackages::extra_local_packages"}],"vendor":"Gleam","versions":[{"lessThan":"1.17.0","status":"affected","version":"0.18.0-rc1","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/affected/0

Affected products and versions

3 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["compiler-cli"],"packageName":"gleam-lang/gleam","packageURL":"pkg:github/gleam-lang/gleam","product":"Gleam","programFiles":["compiler-cli/src/dependencies.rs"],"programRoutines":[{"name":"compiler_cli::dependencies::remove_extra_packages"},{"name":"compiler_cli::dependencies::LocalPackages::read_from_disc"},{"name":"compiler_cli::dependencies::LocalPackages::extra_local_packages"}],"repo":"https://github.com/gleam-lang/gleam","vendor":"Gleam","versions":[{"lessT…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/affected/1
{"collectionURL":"https://ghcr.io","cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["compiler-cli"],"packageName":"gleam-lang/gleam","packageURL":"pkg:oci/gleam?repository_url=ghcr.io/gleam-lang","product":"Gleam","programFiles":["compiler-cli/src/dependencies.rs"],"programRoutines":[{"name":"compiler_cli::dependencies::remove_extra_packages"},{"name":"compiler_cli::dependencies::LocalPackages::read_from_disc"},{"name":"compiler_cli::dependencies::LocalPackages::extra_local_packages"}],"vendor":"Gleam","versions":[{"lessThan":"v1.17.0-elixir","statu…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/affected/2
{"cpes":["cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["compiler-cli"],"packageName":"gleam","packageURL":"pkg:sid/gleam.run/gleam","product":"Gleam","programFiles":["compiler-cli/src/dependencies.rs"],"programRoutines":[{"name":"compiler_cli::dependencies::remove_extra_packages"},{"name":"compiler_cli::dependencies::LocalPackages::read_from_disc"},{"name":"compiler_cli::dependencies::LocalPackages::extra_local_packages"}],"vendor":"Gleam","versions":[{"lessThan":"1.17.0","status":"affected","version":"0.18.0-rc1","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-43965.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/gleam-lang/gleam/commit/690ca069817bee5f77a28fc3e360627c1da19291"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/gleam-lang/gleam/security/advisories/GHSA-jqvf-f6p2-wrv3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/adp/0/references/0
{"tags":["vendor-advisory","related"],"url":"https://github.com/gleam-lang/gleam/security/advisories/GHSA-jqvf-f6p2-wrv3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-43965"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:15b3bf4163ccd0b75da7d5c7cbad0d726a19073e28091f2d8e55f207ddeb59a6 · sha256:b764e35dc3417ca2… · /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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