Vulnerability DatabaseCVE-2026-110259
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CVE-2026-110259
Published:October 14, 2026
Updated:October 16, 2026
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.
Affected Packages
org.ow2.asm:asm (JAVA):
Affected version(s) >=9.10 <9.11
Fix Suggestion:
Update to version 9.11
Related Resources (9)
https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-uncontrolled-recursion-via-classwriter-replaceasminstructions
https://asm.ow2.io/versions.html
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110259.json
https://gitlab.ow2.org/asm/asm
https://gitlab.ow2.org/asm/asm/-/commit/e9aca627c17e1619bcb8059afb43382dac6b275f
https://nvd.nist.gov/vuln/detail/CVE-2026-110259
https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/ClassWriter.java#L751
https://repo1.maven.org/maven2/
https://gitlab.ow2.org/asm/asm/-/merge_requests/459
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CVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Recursion
CWE-674
EPSS
Base Score:
0.17