CVE-2026-110262 OW2 CVE debrief

Who should care

Defenders responsible for OW2 ASM deployments should assess exposure and apply patches or mitigations to prevent potential denial-of-service attacks. This includes operators, platform administrators, vulnerability management teams, and security teams. They should review compensating controls for exposed systems while remediation is scheduled and verified, and check relevant monitoring, detection, and logs for exposed assets that need extra review.

Why it matters

Defenders should prioritize verifying exposure and applying patches or mitigations to prevent potential denial-of-service attacks.

• Denial-of-service attacks may occur if the vulnerability is exploited
• Verification of exposure and patching are necessary to prevent potential attacks
• Monitoring for potential attacks is recommended

Technical summary

The vulnerability is caused by excessive memory allocation in the asm-commons AdviceAdapter. Attackers can craft bytecode with many forward jump targets in constructors, causing unbounded stack copies in forwardJumpStackFrames and allocation of hundreds of megabytes. This can lead to denial-of-service attacks. Defenders should prioritize verifying exposure and applying patches or mitigations to prevent potential attacks. The vulnerability affects OW2 ASM deployments, and defenders should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Defensive priority

Defenders should prioritize verifying exposure and applying patches or mitigations to prevent potential denial-of-service attacks.

Recommended defensive actions

• Verify exposure by checking if the used OW2 ASM version is 3.1 before 9.11
• Apply patches or mitigations provided by the vendor
• Monitor for potential denial-of-service attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability is caused by excessive memory allocation in the asm-commons AdviceAdapter. Attackers can craft bytecode with many forward jump targets in constructors, causing unbounded stack copies in forwardJumpStackFrames and allocation of hundreds of megabytes.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.