CVE-2026-112046
OW2 ASM 9.11 before 9.11.1 Denial of Service via Infinite Loop in Label.resolve()
OW2 ASM
CVSS
6.8MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.12%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 9.11.1ASMCVE 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 9.11 before 9.11.1 contains an infinite loop vulnerability in Label.resolve() caused by 16-bit forward-reference offsets truncating when rewritten methods exceed 64 KB. Attackers can supply crafted class files whose transformed code grows past 65535 bytes, hanging ClassReader.accept() and denying service to build tools, instrumenters, agents, or analyzers.
Text from CVE List
Affected versions 1
- ASMaffected: 9.11 before 9.11.1CVE List
References 5
- gitlab.ow2.org/asm/asm/-/merge_requests/480Fixvia CVE List
- gitlab.ow2.org/asm/asm/-/commit/4bb1a4701e7b61c2163525b987a96a8db815cb68Fixvia CVE List
- vulncheck.com/advisories/ow2-asm-9.11-before-9.11.1-denial-of-service-via-infinite-loop-in-label-resolveAdvisoryvia CVE List
- gitlab.ow2.org/asm/asm/-/blob/ASM_9_11/asm/src/main/java/org/objectweb/asm/Label.java#L417Referencevia CVE List
- asm.ow2.io/versions.htmlReferencevia CVE List