CVE-2026-110591

OW2 ASM 1.4.3 before 9.11 contains an excessive resource consumption vulnerability in Analyzer.analyze() that allows attackers to exhaust memory and CPU via crafted class files. Attackers can supply class files analysed through BasicVerifier, SimpleVerifier or SourceInterpreter to trigger unbounded per-instruction Frame allocation and fix point iterations, causing denial of service.

CVSS 4.0

6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

CWE

CWE-770

Published

2026-10-14

Modified

2026-10-20

Record from

the NVD, synced 2026-10-21

References

• https://asm.ow2.io/versions.html
• https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm-analysis/src/main/java/org/objectweb/asm/tree/analysis/Analyzer.java#L150
• https://gitlab.ow2.org/asm/asm/-/commit/4632a2283f1192fd0e93035661b49568a7cb8b6c
• https://gitlab.ow2.org/asm/asm/-/merge_requests/468
• https://www.vulncheck.com/advisories/ow2-asm-1.4.3-before-9.11-excessive-resource-consumption-via-analyzer

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