CVE-2026-110263 OW2 ASM 3.0 before 9.11 Uncontrolled Recursion in SignatureReader
Attackers can cause denial of service in applications using OW2 ASM by supplying crafted class files with deeply nested generic type signatures.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-110263?
CVE-2026-110263 is a medium-severity denial of service vulnerability in OW2 ASM, published on 14 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in SignatureReader.parseType() that allows attackers to exhaust the stack via deeply nested generic type signatures. Attackers can supply a crafted class file with a long Signature attribute containing many nested type arguments to trigger a StackOverflowError during class transformation, causing denial of service.
Weakness: CWE-674
Which versions are affected by CVE-2026-110263?
How do I fix CVE-2026-110263?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-110263 being exploited?
There is no known exploitation of CVE-2026-110263 in the wild and no public exploit code.
Sources
Also known as AZL-108375, AZL-108417, DEBIAN-CVE-2026-110263, GHSA-9vfw-838x-23h7, UBUNTU-CVE-2026-110263.