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CVE-2026-49754

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client (HTTP/2 CONTINUATION flood). When Mint's HTTP/2 receive path observes a HEADERS frame without the END_HEADERS flag, the unparsed header-block fragment is parked in conn.headers_being_processed, and every subsequent CONTINUATION frame on that stream is appended to the accumulator. Nothing in the receive path caps the accumulator: ther
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:942cac029b1c7fb20d41a082e2da4716435aa79cec85a91024ccdaecd7bfff95
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://repo.hex.pm","cpes":["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP2'"],"packageName":"mint","packageURL":"pkg:hex/mint","product":"mint","programFiles":["lib/mint/http2.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP2':handle_continuation/3"},{"name":"'Elixir.Mint.HTTP2':handle_headers/3"}],"repo":"https://github.com/elixir-mint/mint","vendor":"elixir-mint","versions":[{"lessThan":"1.9.0","status":"affected","version":"0.1.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/affected/0

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP2'"],"packageName":"elixir-mint/mint","packageURL":"pkg:github/elixir-mint/mint","product":"mint","programFiles":["lib/mint/http2.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP2':handle_continuation/3"},{"name":"'Elixir.Mint.HTTP2':handle_headers/3"}],"repo":"https://github.com/elixir-mint/mint.git","vendor":"elixir-mint","versions":[{"lessThan":"b662d127d3028b5426c88d4c9cc7fe430491a10b","status":"affected","version":"596ca4304504be68939c4929…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP2'"],"packageName":"mint","packageURL":"pkg:hex/mint","product":"mint","programFiles":["lib/mint/http2.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP2':handle_continuation/3"},{"name":"'Elixir.Mint.HTTP2':handle_headers/3"}],"repo":"https://github.com/elixir-mint/mint","vendor":"elixir-mint","versions":[{"lessThan":"1.9.0","status":"affected","version":"0.1.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/affected/0
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Mint.HTTP2'"],"packageName":"elixir-mint/mint","packageURL":"pkg:github/elixir-mint/mint","product":"mint","programFiles":["lib/mint/http2.ex"],"programRoutines":[{"name":"'Elixir.Mint.HTTP2':handle_continuation/3"},{"name":"'Elixir.Mint.HTTP2':handle_headers/3"}],"repo":"https://github.com/elixir-mint/mint.git","vendor":"elixir-mint","versions":[{"lessThan":"b662d127d3028b5426c88d4c9cc7fe430491a10b","status":"affected","version":"596ca4304504be68939c4929…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"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: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:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-49754.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/elixir-mint/mint/commit/b662d127d3028b5426c88d4c9cc7fe430491a10b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/references/3
{"tags":["vendor-advisory","related"],"url":"https://github.com/elixir-mint/mint/security/advisories/GHSA-2p26-p43x-fhp8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/elixir-mint/mint/security/advisories/GHSA-2p26-p43x-fhp8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /containers/adp/0/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-49754"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c739a9b5675fb3d02bb75589c43265d65315cf65f0a10aa4af3ee84972c6a18d · sha256:af470f08870ea1e3… · /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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