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CVE-2026-56819

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can leak one direct `ByteBuf` per HTTP/2 `DATA` frame in applications that enable HTTP/2 content decompression via `DelegatingDecompressorFrameListener`. When a `DATA` frame is processed for a stream whose decompressor has already been closed, `Http2Decompressor.decompress(...)` calls `decompres
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5107b3d6b12ddd4c3443ef99d6b17f607716f1ae7bace00e10d0b42eaab4966c
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-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-401","description":"CWE-401: Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /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:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /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:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-401","description":"CWE-401: Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /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:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /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:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /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:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /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:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /containers/cna/references/4
{"name":"https://github.com/netty/netty/security/advisories/GHSA-93wv-jw9v-4972","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-93wv-jw9v-4972"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/netty/netty/security/advisories/GHSA-93wv-jw9v-4972"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:61a7f0e3e1d95245594ef536d444b5c47cf1a6f04eba45a39c6799fdbcdc1fd8 · sha256:712063ca081991a3… · /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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