CVE-2026-93569

highpriority · track · 34EPSS 0.022 · 82 %ileDEFRUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
2.19% (82nd) EPSS
CVSS 8.2 · high
Is it mine?
3 products
Check your exposure
Who says so?
2 sources
cert_bund · certfr

EPSS · scored 2026-10-22

A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2 :authority field, discarding the original request-target authority. This inconsistency can allow an attacker to bypass security controls in Netty-based proxies or gateways, potentially leading to unauthorized access, cache poisoning, or misrouting of requests.

01

cvss

Technical severity, 0–10. One row per scoring source.

8.2
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Nprimary · secalert@redhat.com USexploitability 3.9 · impact 4.2
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-444US
04

affected products (3)

Products and version ranges known to be affected.

05

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3477Netty: Mehrere SchwachstellenDeutsch2026-09-20csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Netty ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand herbeizuführen.

  • WID-SEC-W-2026-4061Oracle Database Server: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE

    Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Database Server ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.

  • CERTFR-2026-AVI-1349Multiples vulnérabilités dans Oracle Database ServerFrançais2026-10-21vendor · certfrFR
06

sources

Which sources assert this record, and when.

cert_bundcertfrNVDCVE.orgMITRE
published 2026-09-18modified 2026-10-19
07

references (6) nvd

External citations — patches, advisories, analysis.

scry

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