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CVE-2026-110261

OW2 ASM 3.0 before 9.11 Excessive CPU Consumption via ClassWriter COMPUTE_FRAMES

MEDIUM
5.5
CVSS Score
Published: October 14, 2026 at 02:16 PM UTC
Updated: October 14, 2026 at 06:17 PM UTC
1 product affected across 1 vendorASM

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

ASM· OW2
90%
3.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

Patch
Source: cverecord
https://gitlab.ow2.org/asm/asm/-/merge_requests/463
Patch
Source: cverecord
https://gitlab.ow2.org/asm/asm/-/commit/ab68bbd2521359b7c8cd3517c6331ced3d817ed0
Technical Description
Source: cverecord
https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/MethodWriter.java#L1595
Release Notes
Source: cverecord
https://asm.ow2.io/versions.html
Third Party Advisory
Source: cverecord
https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-excessive-cpu-consumption-via-classwriter-compute-frames

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMVulnCheck
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-407

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