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Back to active CVEs
Medium · CVSS 6.8CVE-2026-110257

OW2 ASM 5.0 before 9.11 Excessive Memory Allocation via BootstrapMethods AttributeCVE-2026-110257

Answer in brief

CVE-2026-110257 records a Medium severity (CVSS 6.8) vulnerability in OW2 ASM 5.0 before 9.11 Excessive Memory Allocation via BootstrapMethods Attribute. The current sources do not mark it as known exploited. The current feed maps OW2/ASM (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 14, 2026Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps OW2/ASM (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
OW2/ASMgeneric>=5.0 <9.119.11

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for OW2/ASM.
  2. 2Review the reported fix. Update OW2/ASM to 9.11 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 14, 2026

Sources and claim methodology

  • Source referenceasm.ow2.io
  • Source referencegitlab.ow2.org
  • Source referencegitlab.ow2.org
  • Source referencegitlab.ow2.org
  • Source referencevulncheck.com
Upstream source description

OW2 ASM 5.0 before 9.11 contains an excessive memory allocation vulnerability in ClassReader.readBootstrapMethodsAttribute() that sizes an int array from num_bootstrap_methods without validating attribute_length. Attackers can supply a crafted class file of about 100 bytes that forces roughly 2 GB allocation, causing an OutOfMemoryError that crashes the JVM or consuming thread.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • NGINX ngx_http_js_module vulnerabilitySame generic ecosystem
  • NGINX ngx_http_js_module vulnerabilitySame generic ecosystem
  • Angular SSR: Denial of Service (DoS) via Infinite Loop on Malformed DOCTYPESame generic ecosystem
  • Angular: Denial of Service via Numeric URL Matrix Parameters in Server-Side Rendering (SSR)Same generic ecosystem
  • Angular DevTools (Local DoS)Same generic ecosystem
  • mise permits untrusted local configuration to override default shell argumentsSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-789
Source
CVE List V5
Source checked
Oct 14, 2026
References
5 linked sources
Open source record