{"id":"CVE-2026-110259","aliases":["AZL-111989","AZL-112129","DEBIAN-CVE-2026-110259","EUVD-2026-101213","GHSA-g9hx-mj27-r452","UBUNTU-CVE-2026-110259"],"status":"published","title":"OW2 ASM 3.0 before 9.11 Uncontrolled Recursion via ClassWriter.replaceAsmInstructions()","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","severity":{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.0017,"percentile":0.06391,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-674"],"published":"2026-10-14T14:16:32Z","modified":"2026-11-03T05:33:06Z","fixes":[{"ecosystem":"Azure Linux:3","package":"objectweb-asm","fixed_in":["9.11.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"asm","fixed_in":["9.11.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"javapackages-bootstrap","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.14.0-5"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"objectweb-asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.11.1-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.10.1-1","9.11.1-1","9.4-1","9.5-1","9.7-1","9.7-2","9.7.1-1","9.8-1","9.8-2","9.9.1-1"]},{"source":"osv","ecosystem":"Debian:13","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.10.1-1","9.11.1-1","9.8-1","9.8-2","9.9.1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.11.1-1"}]}],"versions":["9.10.1-1","9.8-1","9.8-2","9.9.1-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0~alpha-1","6.0~alpha-2","6.0-1","7.0-1~18.04"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1-2","7.2-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.1-1","9.2-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.4-1","9.5-1","9.6~us1-0ubuntu1","9.7-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.9.1-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"asm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.8-1","9.8-2","9.9.1-1"]}],"products":[{"vendor":"ow2","product":"asm"}],"references":[{"url":"https://gitlab.ow2.org/asm/asm/-/merge_requests/459","tags":["patch","fix","report"]},{"url":"https://gitlab.ow2.org/asm/asm/-/commit/e9aca627c17e1619bcb8059afb43382dac6b275f","tags":["patch","fix","report"]},{"url":"https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/ClassWriter.java#L751","tags":["technical-description","article","report"]},{"url":"https://asm.ow2.io/versions.html","tags":["release-notes","advisory","report"]},{"url":"https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-uncontrolled-recursion-via-classwriter-replaceasminstructions","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110259","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-g9hx-mj27-r452"},{"url":"https://repo1.maven.org/maven2/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110259.json","tags":["advisory"]},{"url":"https://gitlab.ow2.org/asm/asm","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-110259","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-110259","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110259","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-110259","title":"OW2 ASM 3.0 before 9.11 Uncontrolled Recursion via ClassWriter.replaceAsmInstructions()","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T14:16:32.252Z","modified":"2026-10-26T16:24:12.006Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T13:34:26.24368Z"}],"euvd":[{"id":"EUVD-2026-101213","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T14:16:32Z","modified":"2026-10-26T16:24:12Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:29.132426Z"}],"ghsa":[{"id":"GHSA-g9hx-mj27-r452","title":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter...","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T15:32:22Z","modified":"2026-10-14T15:32:30Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:13:26.117603Z"}],"nvd":[{"id":"CVE-2026-110259","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T15:17:07.65Z","modified":"2026-10-26T17:17:13.94Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:12:58.99337Z"}],"osv":[{"id":"CVE-2026-110259","title":"OW2 ASM 3.0 before 9.11 Uncontrolled Recursion via ClassWriter.replaceAsmInstructions()","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T14:16:32.252Z","modified":"2026-10-28T02:30:55.811199766Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:44:55.61515Z"},{"id":"DEBIAN-CVE-2026-110259","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T15:17:07.65Z","modified":"2026-10-27T10:00:41.062611492Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:45:49.824149Z"},{"id":"UBUNTU-CVE-2026-110259","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T15:17:00Z","modified":"2026-10-28T17:50:34Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:55:59.591851Z"},{"id":"AZL-111989","title":"CVE-2026-110259 affecting package javapackages-bootstrap 1.14.0-5","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T15:17:07Z","modified":"2026-11-03T05:33:06Z","updated_at":"2026-11-05T16:41:18.705965Z"},{"id":"AZL-112129","title":"CVE-2026-110259 affecting package objectweb-asm for versions less than 9.11.1-1","description":"OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.","status":"published","published":"2026-10-14T15:17:07Z","modified":"2026-11-02T14:17:41.82717602Z","updated_at":"2026-11-02T15:28:02.666535Z"}]}}