Log in Start free

Vulnerability · Published Oct 14, 2026 · Assigned by VulnCheck

CVE-2026-110263OW2 ASM 3.0 before 9.11 Uncontrolled Recursion in SignatureReader

Medium 5.5

In plain English

A medium-severity security flaw in ASM from OW2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 93.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12asmno fix listedDEBIAN-CVE-2026-110263
Debian:13asmno fix listedDEBIAN-CVE-2026-110263
Debian:14asm9.11.1-1DEBIAN-CVE-2026-110263
Ubuntu:22.04:LTSasmno fix listedUBUNTU-CVE-2026-110263
Ubuntu:24.04:LTSasmno fix listedUBUNTU-CVE-2026-110263
Ubuntu:26.04:LTSasmno fix listedUBUNTU-CVE-2026-110263
Ubuntu:26.10asmno fix listedUBUNTU-CVE-2026-110263

Affected products (as reported)

VendorProductVersions
OW2 ASM 3.0 – before 9.11

Weakness: CWE-674 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References