{"answers":{"affected":"4 open source packages ship an affected version, including at.yawk.lz4:lz4-java and org.lz4:lz4-java.","exploited":"There is no known exploitation of CVE-2026-106449 in the wild and no public exploit code.","fix":"Upgrade at.yawk.lz4:lz4-java to 1.11.4 or later.","what":"CVE-2026-106449 is a low-severity denial of service vulnerability in yawkat lz4-java, published on 6 Oct 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-2026-106449 and fix it if it is affected.\n\nWhat it is: CVE-2026-106449 is a low-severity denial of service vulnerability in yawkat lz4-java, published on 6 Oct 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-2026-106449 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- at.yawk.lz4:lz4-java (Maven): affected all versions; fixed in 1.11.4\n- at.yawk.lz4:lz4-java (Maven): affected all versions; fixed in 1.11.4\n- org.lz4:lz4-java (Maven): affected all versions up to 1.8.1; no fix listed\n- org.lz4:lz4-java (Maven): affected all versions up to 1.8.1; no fix listed\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-2026-106449/ (Markdown: https://insights.sbomify.com/CVE-2026-106449/index.md)","id":"CVE-2026-106449","markdown":"https://insights.sbomify.com/CVE-2026-106449/index.md","name":"CVE-2026-106449","record":{"aliases":["CLEANSTART-2026-AB78638","CLEANSTART-2026-BO87876","CLEANSTART-2026-EA15585","CLEANSTART-2026-GW69718","CLEANSTART-2026-MS32897","CLEANSTART-2026-WC49025","CLEANSTART-2026-YW37682","DEBIAN-CVE-2026-106449","ECHO-df47-6feb-99c5","GHSA-343h-94h5-c4wr","MINI-2vcg-65cm-2jv3","MINI-3ccp-3wvc-v4wg","MINI-3ghp-7qrr-5m4g","MINI-3q42-7x3g-9qfm","MINI-3rx6-j7mp-4qw9","MINI-4cgp-4fx7-696j","MINI-5gp6-rmhq-gfc8","MINI-5m54-g95g-cr87","MINI-5mq7-hw2f-vjw7","MINI-5w2q-rm44-p627","MINI-62f9-37j5-jc7g","MINI-6cf7-68wr-9997","MINI-7ccr-m99p-2w6g","MINI-8c83-pc9v-6rwv","MINI-ff2m-7cf9-xvh5","MINI-fxpm-w63j-jqf8","MINI-grj5-4hmh-xcgx","MINI-h5rq-h3r7-867g","MINI-h94r-q6vr-78vj","MINI-jjgj-jjm4-847v","MINI-jqjj-5ppp-7r5w","MINI-m47c-xrvm-3hg4","MINI-ph42-2j38-qmjv","MINI-phgm-rm4g-phjg","MINI-qf75-c34r-3p7w","MINI-qpfp-vmr4-56jf","MINI-qq5q-xf24-fvpm","MINI-qqrg-vfr4-fmg9","MINI-qv64-f9jh-6p85","MINI-rmm8-x9xm-7qmc","MINI-rr56-99jr-jwgh","MINI-rv84-w7rf-4m38","MINI-v44w-94q6-2rjv","MINI-vhqq-3ww2-q576","MINI-vvgq-7wpw-h4wv","MINI-wrm4-q8xq-78mc","MINI-x6rx-597g-xvg9","MINI-xph8-h442-7jj3","UBUNTU-CVE-2026-106449"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Java LZ4 compression library","requires_auth":"none","summary":"An attacker can cause a denial of service via stack exhaustion in the LZ4 Java library when configured to process empty blocks recursively.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill(), allowing a long sequence of empty blocks in an attacker-controlled compressed stream to exhaust the decoding thread's stack and throw StackOverflowError. The default stopOnEmptyBlock setting is true and is not affected, and the issue does not cause memory corruption. This issue is fixed in version 1.11.4.","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":"yawkat LZ4 Java: LZ4BlockInputStream with stopOnEmptyBlock=false recurses once per empty block, causing StackOverflowError","id":"CVE-2026-106449","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"yawkat LZ4 Java: LZ4FrameInputStream reallocates block buffers for every frame, allowing CPU and GC amplification from small inputs","id":"CVE-2026-106450"},"packages":[{"ecosystem":"Maven","fixed":["1.11.4"],"introduced":["0"],"last_affected":[],"package":"at.yawk.lz4:lz4-java","purl":null,"source":"GHSA-343h-94h5-c4wr"},{"ecosystem":"Maven","fixed":["1.11.4"],"introduced":["0"],"last_affected":[],"package":"at.yawk.lz4:lz4-java","purl":"pkg:maven/at.yawk.lz4/lz4-java","source":"GHSA-343h-94h5-c4wr"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["1.8.1"],"package":"org.lz4:lz4-java","purl":null,"source":"GHSA-343h-94h5-c4wr"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["1.8.1"],"package":"org.lz4:lz4-java","purl":"pkg:maven/org.lz4/lz4-java","source":"GHSA-343h-94h5-c4wr"}],"prev":{"headline":"StableLib: Prototype poisoning via `__proto__` map keys in CBOR decoding","id":"CVE-2026-106448"},"products":["lz4-java"],"published":"2026-10-06","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["yawkat"]},"summary":"An attacker can cause a denial of service via stack exhaustion in the LZ4 Java library when configured to process empty blocks recursively.","url":"https://insights.sbomify.com/CVE-2026-106449/"}