CVE-2026-110258
Medium
Description
OW2 ASM 3.0 before 9.11 contains an excessive memory allocation vulnerability in Label.addSubroutineRetSuccessors() that fails to enforce the single-RET-per-JSR rule. Attackers can supply a crafted invalid class file with multiple RET instructions for one JSR, triggering a roughly 2 GB allocation that crashes the JVM.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Microsoft Azl3 Objectweb-asm
PublishedOct 14, 2026
First seenOct 14, 2026
Weakness typeCWE-789CWE-789
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft azl3_objectweb-asm_9.6-1 | No range specified | — |
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