Quick answers
- Is CVE-2026-110270 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-110270 being exploited in the wild.
- How severe is CVE-2026-110270?
- Medium severity, with a CVSS score of 5.5, published 14 October 2026.
- Which products and versions are affected?
- OW2 ASM 3.0 before 9.11.
- Is there a fix for CVE-2026-110270?
- Yes: fixed in ASM 9.11. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-110270 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-110270?
- Check whether you run OW2 ASM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: ASM 9.11
Technical details
The JSRInlinerAdapter in ASM 3.0 before 9.11 lacks resource limits when processing JSR/RET subroutine inlining, allowing attackers to supply crafted class files with nested subroutines that trigger O(2^n) memory allocation. The vulnerability requires processing a malicious class file through the adapter, and successful exploitation results in OutOfMemoryError causing JVM termination. A fix is available in ASM 9.11 which adds an API to provide control over resources used by JSRInlinerAdapter.
Affected products
- OW2 ASM 3.0 before 9.11
Timeline
- 2026-10-14: disclosed