CVE-2026-110270
OW2 ASM 3.0 before 9.11 Exponential Memory Allocation in JSRInlinerAdapter
OW2 ASM
CVSS
6.8MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 9.11ASMCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
OW2 ASM 3.0 before 9.11 contains an uncontrolled memory allocation vulnerability in the asm-commons JSRInlinerAdapter that inlines JSR/RET subroutines without memory or work limits. Attackers can supply a crafted class file with nested subroutines to force O(2^n) memory allocation, causing an OutOfMemoryError that crashes the JVM.
Text from CVE List
Affected versions 1
- ASMaffected: 3.0 before 9.11CVE List
References 5
- gitlab.ow2.org/asm/asm/-/merge_requests/466Fixvia CVE List
- gitlab.ow2.org/asm/asm/-/commit/f2b988af48719f85a274f2a05e37bc55c0cd22a1Fixvia CVE List
- vulncheck.com/advisories/ow2-asm-3.0-before-9.11-exponential-memory-allocation-in-jsrinlineradapterAdvisoryvia CVE List
- gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm-commons/src/main/java/org/objectweb/asm/commons/JSRInlinerAdapter.java#L232Referencevia CVE List
- asm.ow2.io/versions.htmlReferencevia CVE List