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CVE-2026-55831

Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, Netty's SPDY SETTINGS decoder accepts a peer-declared SETTINGS entry count up to the 24-bit frame-length limit and materializes every unique setting ID in `DefaultSpdySettingsFrame`, allowing a remote SPDY/3.1 peer to send a syntactically valid roughly 2 MiB SETTINGS frame that creates 262144 map entries and amplifies network input into heap growth and ordered-map in
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:640b0dffaece26727622af9deb044448e11e5f9a0578d1e581650e5c4368d1b8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"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:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"netty","vendor":"netty","versions":[{"status":"affected","version":">= 4.2.0.Final, < 4.2.16.Final"},{"status":"affected","version":">= 4.1.0.Final, < 4.1.136.Final"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"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:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/references/1
{"name":"https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/references/2
{"name":"https://github.com/netty/netty/releases/tag/netty-4.1.136.Final","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/releases/tag/netty-4.1.136.Final"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/references/3
{"name":"https://github.com/netty/netty/releases/tag/netty-4.2.16.Final","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/references/4
{"name":"https://github.com/netty/netty/security/advisories/GHSA-6jqx-86gh-f27w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-6jqx-86gh-f27w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/netty/netty/security/advisories/GHSA-6jqx-86gh-f27w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:588eb4338ee3e8137ff55b4d2138b9eee1a03790ff3b3cd73d82b97775fe2a6c · sha256:93b3586982b58145… · /containers/adp/0/references/0

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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