---
id: CVE-2026-112046
title: >-
  OW2 ASM 9.11 before 9.11.1 Denial of Service via Infinite Loop in
  Label.resolve()
summary: >-
  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 c…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-835
vendor: OW2
product: ASM
affected:
  - ASM >= 9.11 < 9.11.1
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T12:19:35.358Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112046'
references:
  - url: 'https://gitlab.ow2.org/asm/asm/-/merge_requests/480'
  - url: >-
      https://gitlab.ow2.org/asm/asm/-/commit/4bb1a4701e7b61c2163525b987a96a8db815cb68
  - url: >-
      https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_11/asm/src/main/java/org/objectweb/asm/Label.java#L417
  - url: 'https://asm.ow2.io/versions.html'
    label: ASM 9.11.1 Release Notes
  - url: >-
      https://www.vulncheck.com/advisories/ow2-asm-9.11-before-9.11.1-denial-of-service-via-infinite-loop-in-label-resolve
    label: >-
      VulnCheck Advisory: OW2 ASM 9.11 before 9.11.1 Denial of Service via
      Infinite Loop in Label.resolve()
tags:
  - cve.org
ingestedAt: '2026-10-18T12:41:54.064Z'
---

## Overview

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.

## Affected

- `ASM >= 9.11 < 9.11.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.