{"answers":{"affected":"4 open source packages ship an affected version, including io.netty:netty-codec-haproxy. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-48059 in the wild and no public exploit code.","fix":"Upgrade io.netty:netty-codec-haproxy to a fixed version for your release line: 4.1.135.Final or 4.2.15.Final.","what":"CVE-2026-48059 is a high-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-2026-48059 and fix it if it is affected.\n\nWhat it is: CVE-2026-48059 is a high-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-2026-48059 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.netty:netty-codec-haproxy (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-codec-haproxy (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-codec-haproxy (Maven): affected from 4.2.0.Final; fixed in 4.2.15.Final\n- io.netty:netty-codec-haproxy (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-2026-48059/ (Markdown: https://insights.sbomify.com/CVE-2026-48059/index.md)","id":"CVE-2026-48059","markdown":"https://insights.sbomify.com/CVE-2026-48059/index.md","name":"CVE-2026-48059","record":{"aliases":["CLEANSTART-2026-BD80531","CLEANSTART-2026-HH77101","CLEANSTART-2026-PJ95856","DEBIAN-CVE-2026-48059","ECHO-fd53-f198-b51a","GHSA-h2qv-fj59-j46j","MINI-2848-m34r-9rf8","MINI-2h98-gj5x-j66m","MINI-2q3c-9v8m-xrm3","MINI-37vh-9hvp-xwhr","MINI-6rrw-q4gj-h26r","MINI-73v9-w2mw-2h4f","MINI-785p-64g2-w8wc","MINI-7x74-9942-75h7","MINI-9923-pcfh-vmgh","MINI-9g2j-fmwp-vxrg","MINI-9jxx-43fj-9h6f","MINI-ccjr-92mv-68vw","MINI-fg9g-hq88-4v86","MINI-fw3j-gvr5-q775","MINI-hgm7-6f9r-4678","MINI-hrxh-c9wj-96p8","MINI-jw8m-7wvj-m3jq","MINI-mmv6-p3f4-rrqx","MINI-pxw6-4jr6-3g46","MINI-rrjw-gc3m-w89x","MINI-vwxj-m29j-433q","MINI-w5g5-jcqf-47cv","MINI-w673-c5g4-9vxf","MINI-wg65-59j5-82wx","MINI-ww8j-4h35-j8qf","MINI-x822-66rw-jm66","MINI-xrx9-2q3r-xfc8","MINI-xxxv-m6w5-frcm","UBUNTU-CVE-2026-48059"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Netty network framework","requires_auth":"none","summary":"Attackers can cause memory exhaustion in Netty HAProxy codec by sending nested SSL TLVs, leading to denial of service.","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":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1286","name":"Improper Validation of Syntactic Correctness of Input"},{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"}],"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, the HAProxy PROXY protocol v2 codec in netty leaks native or heap memory on every connection when a client sends a syntactically valid header containing nested `PP2_TYPE_SSL` TLVs (type-length-value records) at depth two or greater. The leak occurs on the successful parse path — no exception is thrown, the message fires downstream, the decoder removes itself, and the application releases the `HAProxyMessage` normally. Yet the underlying cumulation buffer (a pooled, potentially direct `ByteBuf` allocated by the channel) remains permanently pinned. 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 HAProxy: Unbalanced Reference Count in Nested PP2_TYPE_SSL TLV Parsing Leads to Memory Exhaustion","id":"CVE-2026-48059","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":3,"next":{"headline":"Litestar: HTML Injection Through CSRF Token","id":"CVE-2026-48060"},"packages":[{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-haproxy","purl":null,"source":"GHSA-h2qv-fj59-j46j"},{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-haproxy","purl":"pkg:maven/io.netty/netty-codec-haproxy","source":"GHSA-h2qv-fj59-j46j"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-codec-haproxy","purl":null,"source":"GHSA-h2qv-fj59-j46j"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-codec-haproxy","purl":"pkg:maven/io.netty/netty-codec-haproxy","source":"GHSA-h2qv-fj59-j46j"}],"prev":{"headline":"nebula-mesh: Session and OIDC state cookies lack the Secure attribute","id":"CVE-2026-48058"},"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":"2026-09-18","vendors":["netty"]},"summary":"Attackers can cause memory exhaustion in Netty HAProxy codec by sending nested SSL TLVs, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2026-48059/"}