{"answers":{"affected":"1 open source package ship an affected version, including checkstyle.","exploited":"There is no known exploitation of OSV-2025-396 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2025-396 yet. Limit exposure of the affected software until one is available.","what":"OSV-2025-396 is a denial of service vulnerability in checkstyle, published on 22 May 2025."},"fix_prompt":"Check this codebase for OSV-2025-396 and fix it if it is affected.\n\nWhat it is: OSV-2025-396 is a denial of service vulnerability in checkstyle, published on 22 May 2025. \nExploitation: There is no known exploitation of OSV-2025-396 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- checkstyle (OSS-Fuzz): affected all versions; 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/OSV-2025-396/ (Markdown: https://insights.sbomify.com/OSV-2025-396/index.md)","id":"OSV-2025-396","markdown":"https://insights.sbomify.com/OSV-2025-396/index.md","name":"OSV-2025-396","record":{"aliases":[],"analysis":{"component_type":"developer_tool","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"Java code style checker","requires_auth":"none","summary":"A security exception in the Java language parser can cause a denial of service when processing specific inputs.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=419059436\n\n```\nCrash type: Security exception\nCrash state:\ncom.puppycrawl.tools.checkstyle.grammar.java.JavaLanguageParser.expr\njava.base/sun.nio.cs.UTF_8$Encoder.encodeArrayLoop\njava.base/sun.nio.cs.UTF_8$Encoder.encodeLoop\n```","ecosystems":["OSS-Fuzz"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Security exception in com.puppycrawl.tools.checkstyle.grammar.java.JavaLanguageParser.expr","id":"OSV-2025-396","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"checkstyle","purl":"pkg:generic/checkstyle","source":"OSV-2025-396"}],"products":null,"published":"2025-05-22","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"OSS-Fuzz","prefix":"OSV"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"A security exception in the Java language parser can cause a denial of service when processing specific inputs.","url":"https://insights.sbomify.com/OSV-2025-396/"}