---
id: CVE-2026-110261
title: >-
  OW2 ASM 3.0 before 9.11 contains a denial of service vulnerability that allows
  attackers to exhaust CPU by supplying crafted class files processed with
  ClassWriter.COMPUTE_FRAMES
summary: >-
  OW2 ASM 3.0 before 9.11 contains a denial of service vulnerability that allows
  attackers to exhaust CPU by supplying crafted class files processed with
  ClassWriter.COMPUTE_FRAMES. Attackers can craft methods that make the
  unbounded Metho…
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'
cwe:
  - CWE-407
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:17:33.730'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110261'
references:
  - url: 'https://asm.ow2.io/versions.html'
    label: disclosure@vulncheck.com
  - url: >-
      https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/MethodWriter.java#L1595
    label: disclosure@vulncheck.com
  - url: >-
      https://gitlab.ow2.org/asm/asm/-/commit/ab68bbd2521359b7c8cd3517c6331ced3d817ed0
    label: disclosure@vulncheck.com
  - url: 'https://gitlab.ow2.org/asm/asm/-/merge_requests/463'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-excessive-cpu-consumption-via-classwriter-compute-frames
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-14T15:36:13.998Z'
---

## Overview

OW2 ASM 3.0 before 9.11 contains a denial of service vulnerability that allows attackers to exhaust CPU by supplying crafted class files processed with ClassWriter.COMPUTE_FRAMES. Attackers can craft methods that make the unbounded MethodWriter.computeAllFrames() fix point algorithm converge slowly, tying up transforming threads for unbounded time.

## Remediation

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