CVE-2026-93569: netty · CWE-444
Affects nettySource GCVE Database
Not known to be exploited · CVSS 8.2 High.
Data as of 7 Nov 2026, 23:24 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 8.2 |
|---|
- EPSS
- 2.4% chance of exploitation in 30 days – higher than 84% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10nettypkg:deb/ubuntu/netty?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu Pro 26.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/resoluteOther threats | Affected
| Fixed in– |
Ubuntu Pro 24.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Ubuntu Pro 22.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/focalOther threats | Affected
| Fixed in– |
Ubuntu Pro 18.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A security update is available from Red Hat in the Red Hat build of Quarkus 3.33.3.SP2 release that addresses this vulnerability. Users should apply this official update to remediate the issue. Prior to applying this update, ensure all previously released relevant errata have been applied. No other specific mitigations are indicated by the vendor advisory.
Description
CVE-2026-93569 is a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process affecting certain versions of Red Hat Build of Apache Camel. The flaw occurs when an HTTP/1 request contains 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 can lead to unauthorized access, cache poisoning, or misrouting of requests in Netty-based proxies or gateways. A security update addressing this and other vulnerabilities is available in Red Hat build of Quarkus 3.33.3.SP2.
References
- ubuntu.com/security/CVE-2026-93569 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-93569 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2536962 (opens in a new tab)
- github.com/netty/netty/security/advisories/GHSA-cg2g-fxr4-mg8m (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-93569 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:69440 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:69470 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70257 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:83612 (opens in a new tab)