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CVE-2026-59249

Inconsistent interpretation of HTTP requests (HTTP response smuggling) vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize a strict intermediary and the Mint client on the same pooled connection, enabling response-queue poisoning against subsequent requests that share the connection. The Mint.HTTP1.decode_body/5 function in lib/mint/http1.ex parses the chunk-size line of a Transfer-Encoding: chunked response with Integer.parse(data, 16). RFC 7230 defines chunk-si
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:107ded1deca90b2b31d19be36a2f04f400cd788dc75154f038339258e8911b7f
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:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP1'"],"packageName":"elixir-mint/mint","packageURL":"pkg:github/elixir-mint/mint","product":"mint","programFiles":["lib/mint/http1.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP1':decode_body/5"}],"repo":"https://github.com/elixir-mint/mint","vendor":"elixir-mint","versions":[{"lessThan":"fc7d16538db7e40b56ed489f08683225cb0197fa","status":"affected","version":"60089586ec7adc9fddb09f69a2f5919ba9ac7f33","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/affected/1

{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP1'"],"packageName":"mint","packageURL":"pkg:hex/mint","product":"mint","programFiles":["lib/mint/http1.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP1':decode_body/5"}],"repo":"https://github.com/elixir-mint/mint","vendor":"elixir-mint","versions":[{"lessThan":"1.9.3","status":"affected","version":"0.1.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP1'"],"packageName":"elixir-mint/mint","packageURL":"pkg:github/elixir-mint/mint","product":"mint","programFiles":["lib/mint/http1.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP1':decode_body/5"}],"repo":"https://github.com/elixir-mint/mint","vendor":"elixir-mint","versions":[{"lessThan":"fc7d16538db7e40b56ed489f08683225cb0197fa","status":"affected","version":"60089586ec7adc9fddb09f69a2f5919ba9ac7f33","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/affected/1
{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP1'"],"packageName":"mint","packageURL":"pkg:hex/mint","product":"mint","programFiles":["lib/mint/http1.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP1':decode_body/5"}],"repo":"https://github.com/elixir-mint/mint","vendor":"elixir-mint","versions":[{"lessThan":"1.9.3","status":"affected","version":"0.1.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","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:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-444","description":"CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-59249.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/elixir-mint/mint/commit/fc7d16538db7e40b56ed489f08683225cb0197fa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/elixir-mint/mint/security/advisories/GHSA-x3x7-96vm-6h2w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/adp/0/references/0
{"tags":["vendor-advisory","related"],"url":"https://github.com/elixir-mint/mint/security/advisories/GHSA-x3x7-96vm-6h2w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-59249"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c3896cfd177d5eaeb74c2ea4deca08846435f76af325003b43201d1669e1bf01 · sha256:40ed924801f9dbd6… · /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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