CVE-2026-110258OW2 ASM 3.0 before 9.11 Excessive Memory Allocation via Multiple RET Instructions
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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.
- CVSS
- 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-789
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
OW2 ASM ow2:asm (from the name) | from 3.0 before 9.11 | CNA record |
References
- https://gitlab.ow2.org/asm/asm/-/merge_requests/458patch
- https://gitlab.ow2.org/asm/asm/-/commit/4dabfe0aef14f8cccb0617640a4add8fbcc4ed36patch
- https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/Label.java#L568technical-description
- https://asm.ow2.io/versions.htmlrelease-notes
- https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-excessive-memory-allocation-via-multiple-ret-instructionsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.