CVE-2026-93567Disclosure

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A flaw was found in Netty's HTTP/2 codec. 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. A remote attacker can exploit this by supplying a different Host header, leading to a malformed HTTP/2 CONNECT request. This can bypass security controls such as tunnel allow-lists or egress policies, resulting in integrity loss.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-20

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://www.cve.org/CVERecord?id=CVE-2026-93567

Full discourse1 post

CVE@CVEnew46d
Disclosure
CVE-2026-93567 HTTP/1 authority-form CONNECT is translated to malformed HTTP/2 CONNECT with Host-controlled :authority https://www.cve.org/CVERecord?id=CVE-2026-93567
Post summary
The text discloses CVE-2026-93567, describing a protocol vulnerability where HTTP/1 authority-form CONNECT requests are improperly translated into malformed HTTP/2 CONNECT requests with host-controlled :authority. It links to the official CVE record but provides no exploit, patch, or active exploitation information.
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