{"schema":"threatline.record/2","record":{"id":"CVE-2026-110257","aliases":[],"summary":"OW2 ASM 5.0 before 9.11 Excessive Memory Allocation via BootstrapMethods Attribute","details":"OW2 ASM 5.0 before 9.11 contains an excessive memory allocation vulnerability in ClassReader.readBootstrapMethodsAttribute() that sizes an int array from num_bootstrap_methods without validating attribute_length. Attackers can supply a crafted class file of about 100 bytes that forces roughly 2 GB allocation, causing an OutOfMemoryError that crashes the JVM or consuming thread.","categories":["Unclassified"],"product":"ASM","vendor":"OW2","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110257","source_modified_at":"2026-10-14T15:55:22.107Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"ASM","vendor":"OW2","versions":[{"version":"5.0","lessThan":"9.11","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110257","source_modified_at":"2026-10-14T15:55:22.107Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"ASM","ecosystem":null},"version":"9.11","basis":"first unaffected version stated in the CVE record"}],"cvss":6.8,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00172,"percentile":0.06271,"score_date":"2026-10-23"},"published_at":"2026-10-14T14:16:30.933Z","modified_at":"2026-10-14T15:55:22.107Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110257","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T15:55:22.107Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110257","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://gitlab.ow2.org/asm/asm/-/merge_requests/456","tags":["patch"]},{"source":"CVE List","url":"https://gitlab.ow2.org/asm/asm/-/commit/eb5fa95bb0670eaec2ecf9b8a3a501b48e5a967c","tags":["patch"]},{"source":"CVE List","url":"https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/ClassReader.java#L3497","tags":["technical-description"]},{"source":"CVE List","url":"https://asm.ow2.io/versions.html","tags":["release-notes"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/ow2-asm-5.0-before-9.11-excessive-memory-allocation-via-bootstrapmethods-attribute","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T14:49:40.338728Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T15:55:22.107Z","content_hash":"eda61cd0b517d10ff05de6034fbf577b643e43b523de22e97032bc575aa1b338"}}