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CVE-2026-110591— OW2 ASM 1.4.3 before 9.11 Excessive Resource Consumption via Analyzer

Quick assessment

Affected
OW2 ASM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OW2 ASM 1.4.3 至 9.11 版本之前的版本中存在一个资源过度消耗漏洞，位于 方法中，攻击者可以通过构造恶意类文件耗尽内存和 CPU 资源。攻击者可以向 、 或 提供经过分析的类文件，从而触发每个指令无限制的 Frame 分配以及固定点迭代，最终导致拒绝服务（DoS）攻击。

CVSS 5.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
OW2 ASM 1.4.3< 9.11 affected
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I. Basic Information for CVE-2026-110591

Vulnerability Information
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Vulnerability Title
OW2 ASM 1.4.3 before 9.11 Excessive Resource Consumption via Analyzer
Source: CVE Program / CVE List V5
Vulnerability Description
OW2 ASM 1.4.3 before 9.11 contains an excessive resource consumption vulnerability in Analyzer.analyze() that allows attackers to exhaust memory and CPU via crafted class files. Attackers can supply class files analysed through BasicVerifier, SimpleVerifier or SourceInterpreter to trigger unbounded per-instruction Frame allocation and fix point iterations, causing denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OW2 ASM 1.4.3 ~ 9.11 -

II. Public POCs for CVE-2026-110591

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III. Intelligence Information for CVE-2026-110591

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Other References for CVE-2026-110591 (4)

Same Patch Batch · OW2 · 2026-10-14 · 9 CVEs total

CVE-2026-110257 5.5 MEDIUM OW2 ASM 5.0 before 9.11 Excessive Memory Allocation via BootstrapMethods Attribute
CVE-2026-110259 5.5 MEDIUM OW2 ASM 3.0 before 9.11 Uncontrolled Recursion via ClassWriter.replaceAsmInstructions()
CVE-2026-110263 5.5 MEDIUM OW2 ASM 3.0 before 9.11 Uncontrolled Recursion in SignatureReader
CVE-2026-110260 5.5 MEDIUM OW2 ASM 3.0 before 9.11 Quadratic Memory Allocation via Exception Handlers
CVE-2026-110258 5.5 MEDIUM OW2 ASM 3.0 before 9.11 Excessive Memory Allocation via Multiple RET Instructions
CVE-2026-110270 5.5 MEDIUM OW2 ASM 3.0 before 9.11 Exponential Memory Allocation in JSRInlinerAdapter
CVE-2026-110261 5.5 MEDIUM OW2 ASM 3.0 before 9.11 Excessive CPU Consumption via ClassWriter COMPUTE_FRAMES
CVE-2026-110262 3.3 LOW OW2 ASM 3.1 before 9.11 Excessive Memory Allocation in AdviceAdapter

IV. Related Vulnerabilities

Same product: ASM
Same vendor: OW2
Same weakness: CWE-770

V. Comments for CVE-2026-110591

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