Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authority
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- io.netty/netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported
- netty-codec-http2
Version range not reported