Vulnerability · Published Oct 14, 2026 · Assigned by VulnCheck
CVE-2026-110262OW2 ASM 3.1 before 9.11 Excessive Memory Allocation in AdviceAdapter
Low 3.3
In plain English
A low-severity resource allocation without limits in ASM from OW2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | asm | no fix listed | DEBIAN-CVE-2026-110262 |
| Debian:13 | asm | no fix listed | DEBIAN-CVE-2026-110262 |
| Debian:14 | asm | 9.11.1-1 | DEBIAN-CVE-2026-110262 |
| Ubuntu:22.04:LTS | asm | no fix listed | UBUNTU-CVE-2026-110262 |
| Ubuntu:24.04:LTS | asm | no fix listed | UBUNTU-CVE-2026-110262 |
| Ubuntu:26.04:LTS | asm | no fix listed | UBUNTU-CVE-2026-110262 |
| Ubuntu:26.10 | asm | no fix listed | UBUNTU-CVE-2026-110262 |
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
References
- https://gitlab.ow2.org/asm/asm/-/merge_requests/464 patch
- https://gitlab.ow2.org/asm/asm/-/commit/b7e6c88801790c9da214efd0498aecb9402796a0 patch
- https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm-commons/src/main/java/org/objectweb/asm/commons/AdviceAdapter.java#L96 technical-description
- ASM 9.11 Release Notes release-notes
- VulnCheck Advisory: OW2 ASM 3.1 before 9.11 Excessive Memory Allocation in AdviceAdapter third-party-advisory