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CVE-2025-67735

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when `HttpRequestEncoder` is used without proper sanitization of the URI. Any application / framework using `HttpRequestEncoder` can be subject to be abused to perform request smuggling using CRLF injection. Versions 4.1.1
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b1a6936f97594d7def1283b3f0b3c42155a8af56dfb7385da25de0b8b1c1ecb6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"netty","vendor":"netty","versions":[{"status":"affected","version":">= 4.2.0.Alpha1, < 4.2.8.Final"},{"status":"affected","version":"< 4.1.129.Final"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:863be47f1effa5831b90e1fab2fab2f882557dccf92f0cbc4435a60aa99320b6 · sha256:a547af7a0b2962cc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:863be47f1effa5831b90e1fab2fab2f882557dccf92f0cbc4435a60aa99320b6 · sha256:a547af7a0b2962cc… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-93","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:863be47f1effa5831b90e1fab2fab2f882557dccf92f0cbc4435a60aa99320b6 · sha256:a547af7a0b2962cc… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:863be47f1effa5831b90e1fab2fab2f882557dccf92f0cbc4435a60aa99320b6 · sha256:a547af7a0b2962cc… · /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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