{"answers":{"affected":"2 open source packages ship an affected version, including io.netty.incubator:netty-incubator-codec-ohttp.","exploited":"There is no known exploitation of CVE-2026-54251 in the wild and no public exploit code.","fix":"Upgrade io.netty.incubator:netty-incubator-codec-ohttp to 0.0.23.Final or later.","what":"CVE-2026-54251 is a high-severity denial of service vulnerability in io.netty.incubator netty-incubator-codec-ohttp, published on 15 Sep 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-2026-54251 and fix it if it is affected.\n\nWhat it is: CVE-2026-54251 is a high-severity denial of service vulnerability in io.netty.incubator netty-incubator-codec-ohttp, published on 15 Sep 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-2026-54251 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.netty.incubator:netty-incubator-codec-ohttp (Maven): affected all versions; fixed in 0.0.23.Final\n- io.netty.incubator:netty-incubator-codec-ohttp (Maven): affected all versions; fixed in 0.0.23.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-2026-54251/ (Markdown: https://insights.sbomify.com/CVE-2026-54251/index.md)","id":"CVE-2026-54251","markdown":"https://insights.sbomify.com/CVE-2026-54251/index.md","name":"CVE-2026-54251","record":{"aliases":["GHSA-vmr9-j6wf-pmh2"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Netty OHTTP codec","requires_auth":"none","summary":"Attackers can cause native memory leaks in Netty OHTTP gateways by sending invalid encrypted requests, leading to service denial.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"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-664","name":"Improper Control of a Resource Through its Lifetime"}],"description":"netty-incubator-codec-ohttp implements Oblivious HTTP (OHTTP) gateway and client functionality using Netty. Prior to 0.0.23.Final, the OHTTP gateway decryption path in codec-ohttp/src/main/java/io/netty/incubator/codec/ohttp/OHttpRequestResponseContext.java allocates a pooled direct ByteBuf for decrypted plaintext before the AEAD tag is verified. When an invalid tag causes decryptChunk() to throw CryptoException, OHttpRequestResponseContext.decodeChunk() does not release the ByteBuf because the allocation is not guarded by try/finally. Repeated invalid encrypted requests can therefore leak native off-heap memory until the gateway is unable to continue serving requests. This issue is fixed in version 0.0.23.Final.","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-incubator-codec-ohttp: [OHttpServerCodec] Native Direct-Memory Leak on AEAD Decryption Failure Leads to Gateway Denial of Service","id":"CVE-2026-54251","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"TS3 Manager: Reflected XSS via /api/download port parameter steals operator session","id":"CVE-2026-54253"},"packages":[{"ecosystem":"Maven","fixed":["0.0.23.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty.incubator:netty-incubator-codec-ohttp","purl":null,"source":"GHSA-vmr9-j6wf-pmh2"},{"ecosystem":"Maven","fixed":["0.0.23.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty.incubator:netty-incubator-codec-ohttp","purl":"pkg:maven/io.netty.incubator/netty-incubator-codec-ohttp","source":"GHSA-vmr9-j6wf-pmh2"}],"prev":{"headline":"K3s: ZIP Archive Path Traversal Vulnerability in etcd Snapshot Decompression","id":"CVE-2026-54250"},"products":["netty-incubator-codec-ohttp"],"published":"2026-09-15","related":[],"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":"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":"2026-09-15","vendors":["io.netty.incubator","netty"]},"summary":"Attackers can cause native memory leaks in Netty OHTTP gateways by sending invalid encrypted requests, leading to service denial.","url":"https://insights.sbomify.com/CVE-2026-54251/"}