CVE-2026-93567
NVD: A flaw was found in Netty's HTTP/2 codec. NVD: When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. NVD: A remote attacker can exploit this by supplying a different Host header, leading to a malformed HTTP/2 CONNECT request.
7.5 Severity
HIGH EPSS
0.0075 (53) KEV
-
Source-published summary
NVD: A flaw was found in Netty's HTTP/2 codec. NVD: When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. NVD: A remote attacker can exploit this by supplying a different Host header, leading to a malformed HTTP/2 CONNECT request.
Possible impact
Source describes remote exposure. Possible impact: This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure.
Affected context
Affected product or version requires source confirmation.
Remediation / advisory
Remediation reference present; patch status requires confirmation in the linked advisory.
Why it matters
Source describes remote exposure. Possible impact: This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure.; CVSS 7.5 (HIGH); EPSS percentile 53; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
remote exposure
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.