{"answers":{"affected":"4 open source packages ship an affected version, including io.netty:netty-codec-http2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-50560 in the wild and no public exploit code.","fix":"Upgrade io.netty:netty-codec-http2 to a fixed version for your release line: 4.1.135.Final or 4.2.15.Final.","what":"CVE-2026-50560 is a medium-severity denial of service vulnerability in Netty Netty, published on 12 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-50560 and fix it if it is affected.\n\nWhat it is: CVE-2026-50560 is a medium-severity denial of service vulnerability in Netty Netty, published on 12 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-50560 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.netty:netty-codec-http2 (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-codec-http2 (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-codec-http2 (Maven): affected from 4.2.0.Final; fixed in 4.2.15.Final\n- io.netty:netty-codec-http2 (Maven): affected from 4.2.0.Final; fixed in 4.2.15.Final\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-50560/ (Markdown: https://insights.sbomify.com/CVE-2026-50560/index.md)","id":"CVE-2026-50560","markdown":"https://insights.sbomify.com/CVE-2026-50560/index.md","name":"CVE-2026-50560","record":{"aliases":["CLEANSTART-2026-GI68379","CLEANSTART-2026-IP93838","CLEANSTART-2026-JY64777","CLEANSTART-2026-PG06501","CLEANSTART-2026-XZ02009","DEBIAN-CVE-2026-50560","ECHO-cbaf-eeb2-8e8f","GHSA-563q-j3cm-6jxm","MINI-246m-x8j2-h773","MINI-28cw-wxv6-8242","MINI-29mp-c84q-fcrj","MINI-2hfc-w33h-9w7q","MINI-35p8-vr26-g363","MINI-363v-pxq9-vwvm","MINI-377g-6gvq-q932","MINI-3j9r-7pf8-hj8r","MINI-3qxj-m544-8crx","MINI-3r3m-hmhg-vpvh","MINI-3w8m-pj99-45f3","MINI-493p-77gc-mgv3","MINI-57f5-gv43-cc3x","MINI-5f42-c372-rpwq","MINI-5mvv-94r6-wx2x","MINI-5rx3-5w6w-54j6","MINI-5xrf-g7gw-vh4m","MINI-6464-3xfv-2vcj","MINI-6g7p-m9h3-wgm7","MINI-75pf-6xw6-7r69","MINI-77j4-h7gr-9g7q","MINI-784x-9pwm-6mf2","MINI-88pr-vp72-x7mq","MINI-8ghf-94j6-h2g6","MINI-8mx4-r7hm-vmx6","MINI-94qc-93jm-x749","MINI-97r5-g3vf-wfhr","MINI-9g63-c82v-j655","MINI-9j3r-745j-86gj","MINI-c4h5-8cvv-hwp4","MINI-c9qq-g9qm-49cq","MINI-cc2q-9h9c-fc54","MINI-cc84-f7p2-3833","MINI-cj3q-p274-g7fj","MINI-cpmh-xg94-5qm6","MINI-ff7j-crfp-949j","MINI-fg96-x9wx-jqpv","MINI-fgw6-mfxr-3qh7","MINI-fp3m-9w5h-qcmj","MINI-g2q9-wvfq-6hfv","MINI-g497-jj4r-3wcx","MINI-g7vp-g3v4-xrcm","MINI-h548-c4fv-fjvm","MINI-hg4c-xx39-crwh","MINI-hhmr-p6wc-cw6p","MINI-j2v3-2gwp-v2f3","MINI-j4hw-qmpm-xv7w","MINI-jcvv-3c2r-gvqq","MINI-jfxv-7373-v7xg","MINI-jj9w-g95v-h8mm","MINI-jxpm-2w5p-9gfx","MINI-m3q4-wc8f-jfxc","MINI-m6xh-36vv-55fm","MINI-m9qv-4vh9-9wcf","MINI-mgh7-3p64-mjpq","MINI-mmf7-8rcj-h6x3","MINI-mwwm-2259-j7g7","MINI-p5c9-wwpg-6hrq","MINI-p6f8-cv59-fwqr","MINI-pfr7-42fv-q3v9","MINI-pmrx-5wx5-8x46","MINI-q24q-h5m5-42m8","MINI-qfr7-7gr8-46j4","MINI-qjrr-vfvf-fxf3","MINI-vg45-xvxq-c8wq","MINI-vp3q-xpwq-fwmj","MINI-w5rj-phg2-243j","MINI-w7mq-786h-72pj","MINI-wfhh-c2cf-rj37","MINI-wgwv-74vv-pwmf","MINI-wmrj-c485-5885","MINI-x5mf-247p-88qr","MINI-x727-x23j-2xf3","MINI-xr5r-4r3m-x2x7","ROOT-APP-MAVEN-CVE-2026-50560","UBUNTU-CVE-2026-50560"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java network framework","requires_auth":"none","summary":"Netty is vulnerable to a HTTP/2 Reset Attack causing denial of service when handling large header sizes, requiring an upgrade to patched versions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"netty","vendor":"netty"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called `SETTINGS_MAX_HEADER_LIST_SIZE`. When a client sends that setting to Netty, it appears that Netty will behave as follows: read the request; proxy the request to the origin; attempt to produce a response; and create an exception while writing the headers for the response. Functionally, this should be similar to the http2 reset attack, but with a different on-the-wire signature. Versions 4.1.135.Final and 4.2.15.Final patch the issue.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature","id":"CVE-2026-50560","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"netty:netty","products":["netty:netty"],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"Yuxi has a JWT Authentication Bypass Leading to Cross-Instance Administrator Token Reuse","id":"CVE-2026-50561"},"packages":[{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-http2","purl":null,"source":"GHSA-563q-j3cm-6jxm"},{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-http2","purl":"pkg:maven/io.netty/netty-codec-http2","source":"GHSA-563q-j3cm-6jxm"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-codec-http2","purl":null,"source":"GHSA-563q-j3cm-6jxm"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-codec-http2","purl":"pkg:maven/io.netty/netty-codec-http2","source":"GHSA-563q-j3cm-6jxm"}],"prev":{"headline":"Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities","id":"CVE-2026-50559"},"products":["netty"],"published":"2026-06-12","related":[{"cvss_score":9.1,"headline":"Netty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContext","id":"CVE-2026-75595","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":8.7,"headline":"Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing","id":"CVE-2026-75596","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":8.7,"headline":"Netty Bzip2Decoder: Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang","id":"CVE-2026-59901","kev_date_added":null,"published":"2026-07-29"},{"cvss_score":8.7,"headline":"Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion","id":"CVE-2026-55851","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.7,"headline":"Netty SpdyHttpDecoder: ByteBuf Reference Leak on RST_STREAM Leads to Native Memory Exhaustion","id":"CVE-2026-56745","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.7,"headline":"Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records","id":"CVE-2026-45674","kev_date_added":null,"published":"2026-06-12"},{"cvss_score":8.7,"headline":"Netty has Insufficient Bailiwick Validation for NS Records","id":"CVE-2026-47691","kev_date_added":null,"published":"2026-06-12"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-13","vendors":["netty"]},"summary":"Netty is vulnerable to a HTTP/2 Reset Attack causing denial of service when handling large header sizes, requiring an upgrade to patched versions.","url":"https://insights.sbomify.com/CVE-2026-50560/"}