CVE Explorer

CVE-2026-55833

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 SPDY header decoding continues inflating zlib-compressed header blocks after the raw header parser has exceeded `maxHeaderSize` and marked the frame truncated in `SpdyFrameCodec`, allowing a remote peer to send a small compressed `HEADERS` block that expands into much larger raw header data and causes compression-amplified CPU and allocation churn. This issue i

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:39fabd95d32e00ba17a06a3c9248218739fee9cbb89729e0f64009984fae82cc

Known exploited

Not asserted

Disputed

Stale source

Conflicts

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:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /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:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /containers/cna/metrics/0/cvssV3_1

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:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 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:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /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:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /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:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /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:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /containers/cna/references/4

{"name":"https://github.com/netty/netty/security/advisories/GHSA-mvh2-crg5-v77c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-mvh2-crg5-v77c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:64aef3ad9c96e2d235768175b427959804c30eb85ee1bb92f4f6e7693aa601c1 · sha256:7637c33608c0a77c… · /containers/cna/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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