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GHSA-F256-J965-7F32 Possible request smuggling in HTTP/2 due missing validation of content-length

🗓️ 30 Mar 2021 15:10:38Reported by GoogleType 
osv
 osv🔗 osv.dev👁 7 Views

Fixed content length validation for a single header frame with endStream to prevent request smuggling when proxied.

Related
Refs
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SourceLink
githubwww.github.com/netty/netty/security/advisories/GHSA-f256-j965-7f32
githubwww.github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj
nvdwww.nvd.nist.gov/vuln/detail/CVE-2021-21409
githubwww.github.com/netty/netty/commit/b0fa4d5aab4215f3c22ce6123dd8dd5f38dc0432
listswww.lists.apache.org/thread.html/re39391adcb863f0e9f3f15e7986255948f263f02e4700b82453e7102@%3Cissues.zookeeper.apache.org%3E
listswww.lists.apache.org/thread.html/re1911e05c08f3ec2bab85744d788773519a0afb27272a31ac2a0b4e8@%3Cnotifications.zookeeper.apache.org%3E
listswww.lists.apache.org/thread.html/rdd5715f3ee5e3216d5e0083a07994f67da6dbb9731ce9e7a6389b18e@%3Ccommits.zookeeper.apache.org%3E
listswww.lists.apache.org/thread.html/rdd206d9dd7eb894cc089b37fe6edde2932de88d63a6d8368b44f5101@%3Ccommits.zookeeper.apache.org%3E
listswww.lists.apache.org/thread.html/rd8f72411fb75b98d366400ae789966373b5c3eb3f511e717caf3e49e@%3Cissues.flink.apache.org%3E
listswww.lists.apache.org/thread.html/rd4a6b7dec38ea6cd28b6f94bd4b312629a52b80be3786d5fb0e474bc@%3Cissues.kudu.apache.org%3E
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04 Feb 2026 04:31Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.15.9
EPSS0.18891
content length validationrequest smugglingproxied environmentsnetty fixsecurity advisory
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