CVE-2026-93579
MEDIUMDescription
A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary, they can be exploited for request smuggling, header injection, or response splitting. This could lead to unauthorized access, data manipulation, or other security bypasses.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Exploit Intelligence
EPSS data unavailable for this CVE.
References
Related Vulnerabilities
Other CWE-1035 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-93578 | Medium | 5.9 | - | - | - |
| CVE-2026-93575 | High | 7.5 | - | - | - |
| CVE-2026-93566 | Medium | 6.5 | - | - | - |
| CVE-2026-93565 | High | 7.5 | - | - | - |
| CVE-2026-93564 | High | 7.5 | - | - | - |
| CVE-2026-93563 | High | 7.5 | - | - | - |
Common questions
How do I fix CVE-2026-93579?
No published fix for CVE-2026-93579 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
How severe is CVE-2026-93579?
CVE-2026-93579 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-18.