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CVE-2026-42586

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the Netty Redis codec encoder (RedisEncoder) writes user-controlled string content directly to the network output buffer without validating or sanitizing CRLF (\r\n) characters. Since the Redis Serialization Protocol (RESP) uses CRLF as the command/response delimiter, an attacker who can control the content of a Redis message can inject arbitrary Redis commands or forge fake responses.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5006c830aefb6776b25794cd9e72766ffc0a6d2a152ebbad44e1f5325320dbef
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

{"product":"netty-codec-redis","vendor":"io.netty","versions":[{"status":"affected","version":">= 4.2.0.Alpha1, < 4.2.13.Final"},{"status":"affected","version":"< 4.1.133.Final"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /containers/cna/affected/1

{"product":"netty","vendor":"netty","versions":[{"status":"affected","version":">= 4.2.0.Alpha1, < 4.2.13.Final"},{"status":"affected","version":"< 4.1.133.Final"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"product":"netty-codec-redis","vendor":"io.netty","versions":[{"status":"affected","version":">= 4.2.0.Alpha1, < 4.2.13.Final"},{"status":"affected","version":"< 4.1.133.Final"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /containers/cna/affected/1
{"product":"netty","vendor":"netty","versions":[{"status":"affected","version":">= 4.2.0.Alpha1, < 4.2.13.Final"},{"status":"affected","version":"< 4.1.133.Final"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /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:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /containers/adp/0/references/0
{"name":"https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e142fcf8a7f4ef520f5416ec6d2a6d25dea3f77540056a67ce12ab3586cef56 · sha256:decde826500f0104… · /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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