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CVE-2026-23940

Uncontrolled Resource Consumption vulnerability in hexpm hexpm/hexpm allows Excessive Allocation. Publishing an oversized package can cause Hex.pm to run out of memory while extracting the uploaded package tarball. This can terminate the affected application instance and result in a denial of service for package publishing and potentially other package-processing functionality. This issue affects hexpm: before 495f01607d3eae4aed7ad09b2f54f31ec7a7df01; hex.pm: before 2026-03-10.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:894d9ed3cb2c40ee38d454d8614300de2d6a823ea99f35e96a1fdcdccb16ff89
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:hexpm:hexpm:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"hexpm/hexpm","packageURL":"pkg:github/hexpm/hexpm","product":"hexpm","repo":"https://github.com/hexpm/hexpm.git","vendor":"hexpm","versions":[{"lessThan":"495f01607d3eae4aed7ad09b2f54f31ec7a7df01","status":"affected","version":"82911daf5f8fb2ab44f298e3ba22b90bc1ae3746","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"hex.pm","vendor":"hexpm","versions":[{"lessThan":"2026-03-10","status":"affected","version":"0","versionType":"date"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:hexpm:hexpm:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"hexpm/hexpm","packageURL":"pkg:github/hexpm/hexpm","product":"hexpm","repo":"https://github.com/hexpm/hexpm.git","vendor":"hexpm","versions":[{"lessThan":"495f01607d3eae4aed7ad09b2f54f31ec7a7df01","status":"affected","version":"82911daf5f8fb2ab44f298e3ba22b90bc1ae3746","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/affected/0
{"defaultStatus":"unaffected","product":"hex.pm","vendor":"hexpm","versions":[{"lessThan":"2026-03-10","status":"affected","version":"0","versionType":"date"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"N…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-23940.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/hexpm/hexpm/commit/495f01607d3eae4aed7ad09b2f54f31ec7a7df01"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/references/3
{"tags":["vendor-advisory","related"],"url":"https://github.com/hexpm/hexpm/security/advisories/GHSA-jp8w-gxf6-8hcr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-23940"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5d0b16939c5ab7922153c2a2a333e92a37ea75f0652d3296eb42860a9026a10f · sha256:dfb61c4e4ea19531… · /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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