CVE-2026-110260

MEDIUM 5.5

OW2 ASM 3.0 before 9.11 Quadratic Memory Allocation via Exception Handlers

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

CWE	CWE-407
Vendor	ow2
Product	asm
Published	Oct 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

OW2 / ASM

3.0 < 9.11

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.ow2.org: https://gitlab.ow2.org/asm/asm/-/merge_requests/461 gitlab.ow2.org: https://gitlab.ow2.org/asm/asm/-/commit/91057c98239d994aed5e46434e34e00d593c0daf gitlab.ow2.org: https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/MethodWriter.java#L1662 asm.ow2.io: https://asm.ow2.io/versions.html vulncheck.com: https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-quadratic-memory-allocation-via-exception-handlers

Credits

Yu Bao, PayPal Cyber Security Team