OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in SignatureReader.parseType() that allows
Affects asmSource GCVE Database
Not known to be exploited · CVSS 6.8 Medium.
Data as of 29 Oct 2026, 00:14 UTC
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 14 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10asmpkg:deb/ubuntu/asm?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSasmpkg:deb/ubuntu/asm?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSasmpkg:deb/ubuntu/asm?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSasmpkg:deb/ubuntu/asm?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSasmpkg:deb/ubuntu/asm?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSasmpkg:deb/ubuntu/asm?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, avoid processing untrusted or malicious class files with deeply nested generic signatures.
Description
OW2 ASM versions before 9.11 have a vulnerability in the SignatureReader.parseType() method that allows attackers to cause uncontrolled recursion. By supplying a crafted class file with deeply nested generic type signatures, an attacker can trigger a StackOverflowError during class transformation, resulting in a denial of service condition.
References
- ubuntu.com/security/CVE-2026-110263 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-110263 (opens in a new tab)
- asm.ow2.io/versions.html (opens in a new tab)
- gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/signature/SignatureReader.java (opens in a new tab)
- gitlab.ow2.org/asm/asm/-/commit/8f87fc0317a4c5ee8f538bcbb641928def25dbd6 (opens in a new tab)
- gitlab.ow2.org/asm/asm/-/merge_requests/465 (opens in a new tab)
- vulncheck.com/advisories/ow2-asm-3.0-before-9.11-uncontrolled-recursion-in-signaturereader (opens in a new tab)