CVE Explorer
CVE-2026-56822
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator forwards the SslHandshakeCompletionEvent before the asynchronous OCSP validation completes. This allows the client's downstream handlers to send sensitive application data (e.g., HTTP requests) to a revoked server before the channel is closed by the OCSP check. n io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered, when
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.Final, < 4.2.16.Final"},{"status":"affected","version":"< 4.1.136.Final"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:3ed0b8b09d0eee8883f734796c0f52fabc292e430715b5bf1dfe525a128fba01 · sha256:53aacd10a3028d18… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:3ed0b8b09d0eee8883f734796c0f52fabc292e430715b5bf1dfe525a128fba01 · sha256:53aacd10a3028d18… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:3ed0b8b09d0eee8883f734796c0f52fabc292e430715b5bf1dfe525a128fba01 · sha256:53aacd10a3028d18… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["exploit"],"url":"https://github.com/netty/netty/security/advisories/GHSA-wc96-39fc-566f"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3ed0b8b09d0eee8883f734796c0f52fabc292e430715b5bf1dfe525a128fba01 · sha256:53aacd10a3028d18… · /containers/adp/0/references/0
{"name":"https://github.com/netty/netty/security/advisories/GHSA-wc96-39fc-566f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-wc96-39fc-566f"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3ed0b8b09d0eee8883f734796c0f52fabc292e430715b5bf1dfe525a128fba01 · sha256:53aacd10a3028d18… · /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.