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DoS (Denial of Service) io.netty:netty-codec-http2 Dependency in Jira Software Data Center

🗓️ 06 Aug 2026 16:30:26Reported by security-metrics-botType 
atlassian
 atlassian🔗 jira.atlassian.com👁 1 Views

Jira Software Data Center DoS via unauthenticated HTTP/2 Netty CVE leaking ByteBuf, CVSS 7.5.

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bdu_fstec
BDU FSTEC		Уязвимость механизма декомпрессии Http2Decompressor.decompress фреймворка для разработки сетевых приложений, серверов и клиентов протоколов Netty, позволяющая нарушителю вызвать отказ в обслуживании
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Cvelist		CVE-2026-56819 Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel is already closed (Direct memory leak / OOM DoS)
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atlassianjira_software_data_centerMatch9.12.28
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18 Aug 2026 22:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.5
EPSS0.00365
SSVC
Jira Software Data CenterDenial of ServiceHTTP/2NettyUnauthenticated Attack
1