{"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-2026-106452 in the wild and no public exploit code.","fix":"Upgrade at.yawk.lz4:lz4-java to 1.11.2 or later.","what":"CVE-2026-106452 is a medium-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-2026-106452 and fix it if it is affected.\n\nWhat it is: CVE-2026-106452 is a medium-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-2026-106452 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 1.11.2\n- at.yawk.lz4:lz4-java (Maven): affected all versions; fixed in 1.11.2\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-2026-106452/ (Markdown: https://insights.sbomify.com/CVE-2026-106452/index.md)","id":"CVE-2026-106452","markdown":"https://insights.sbomify.com/CVE-2026-106452/index.md","name":"CVE-2026-106452","record":{"aliases":["CLEANSTART-2026-CX61220","CLEANSTART-2026-ER27967","CLEANSTART-2026-GT24966","CLEANSTART-2026-HV49575","CLEANSTART-2026-HX04785","CLEANSTART-2026-OM13528","DEBIAN-CVE-2026-106452","ECHO-0e98-3ae9-088f","GHSA-4v53-57pg-c464","MINI-2273-48mc-2xvc","MINI-242v-42j2-v6cm","MINI-24j6-8jg2-38p9","MINI-292p-mhpp-f3mf","MINI-2ch4-4g48-89v5","MINI-2jxr-7cv8-rxvm","MINI-3x7v-8g6v-jx3g","MINI-3xr2-x7w3-4xgp","MINI-5m2g-cc88-hgf4","MINI-7729-g5xj-mgwh","MINI-7h9q-78p7-rh7j","MINI-8fjq-v28j-56vm","MINI-8qrj-82wm-q7f5","MINI-8wvq-h9qp-6x3h","MINI-9j4p-5m29-jgm8","MINI-c6xg-g8vg-5rx6","MINI-chpc-jqqh-69hw","MINI-cx9q-j7jm-7rc3","MINI-f87w-rjfm-5x4f","MINI-fh8q-wr6x-wf5w","MINI-fmr2-6hwg-h4rg","MINI-gcc7-8jwc-pw5j","MINI-gmv3-x2x3-v4fg","MINI-h6vq-j9j2-mc4j","MINI-hghr-x355-qmp7","MINI-hgpf-vcxq-6mmx","MINI-j754-hfmx-hv7v","MINI-jm38-xfg8-329h","MINI-mcqg-h5gr-x9vj","MINI-mg3g-xcq2-8crp","MINI-pgm4-j22h-3jqp","MINI-q859-gq73-rm55","MINI-qvcv-2pp9-fp3h","MINI-r36v-g5px-4q5x","MINI-rjx8-qmf8-89fx","MINI-rv87-g4hh-cx9c","MINI-v5wx-v9vj-7p8p","MINI-w2wj-cjqh-546q","MINI-w33m-c2gw-57c2","MINI-w42m-6rp5-rjhw","MINI-w5qg-f5hg-g7fg","MINI-w9f5-634q-ppg5","MINI-wm6w-r2v7-gv47","MINI-wx5c-mxff-hw9c","MINI-x95v-422j-46x6","MINI-xh9j-c3x5-fpp2","UBUNTU-CVE-2026-106452"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java LZ4 compression library","requires_auth":"none","summary":"An attacker can cause a denial of service by sending a crafted LZ4 stream that triggers excessive memory allocation in the Java library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compressedLen field in a legacy LZ4Block header is nonnegative but allocates a compressed-input buffer of that attacker-controlled size before reading payload data, allowing a header-only stream to request a near-2 GiB allocation and exhaust the JVM heap. Canonical writers emit raw blocks when compression is not smaller than the original block, but vulnerable readers accept non-canonical oversized compressed blocks. This issue is fixed in version 1.11.2.","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 allocates an unvalidated compressed length from the stream header","id":"CVE-2026-106452","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: LZ4DecompressorWithLength allocates the unvalidated size from the 4-byte length header, so a 5-byte input triggers a 1 GiB allocation and OutOfMemoryError","id":"CVE-2026-106453"},"packages":[{"ecosystem":"Maven","fixed":["1.11.2"],"introduced":["0"],"last_affected":[],"package":"at.yawk.lz4:lz4-java","purl":null,"source":"GHSA-4v53-57pg-c464"},{"ecosystem":"Maven","fixed":["1.11.2"],"introduced":["0"],"last_affected":[],"package":"at.yawk.lz4:lz4-java","purl":"pkg:maven/at.yawk.lz4/lz4-java","source":"GHSA-4v53-57pg-c464"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["1.8.1"],"package":"org.lz4:lz4-java","purl":null,"source":"GHSA-4v53-57pg-c464"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["1.8.1"],"package":"org.lz4:lz4-java","purl":"pkg:maven/org.lz4/lz4-java","source":"GHSA-4v53-57pg-c464"}],"prev":{"headline":"yawkat LZ4 Java: Native library extraction to a shared temporary directory is vulnerable to file replacement by another local user","id":"CVE-2026-106451"},"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["yawkat"]},"summary":"An attacker can cause a denial of service by sending a crafted LZ4 stream that triggers excessive memory allocation in the Java library.","url":"https://insights.sbomify.com/CVE-2026-106452/"}