OW2 ASM up to 9.10 ClassWriter ClassWriter.replaceAsmInstructions recursion

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.81-

Summaryinfo

A vulnerability was found in OW2 ASM up to 9.10. It has been classified as problematic. This issue affects the function ClassWriter.replaceAsmInstructions of the component ClassWriter. Performing a manipulation results in recursion. This vulnerability is reported as CVE-2026-110259. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in OW2 ASM up to 9.10. This affects the function ClassWriter.replaceAsmInstructions of the component ClassWriter. The manipulation with an unknown input leads to a recursion vulnerability. CWE is classifying the issue as CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. This is going to have an impact on availability. The summary by CVE is:

OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in ClassWriter.replaceAsmInstructions() that allows attackers to cause denial of service through crafted class files. Attackers can supply a class with a large method containing many long forward jumps, triggering unbounded toByteArray() recursion and a StackOverflowError during transformation.

It is possible to read the advisory at gitlab.ow2.org. This vulnerability is uniquely identified as CVE-2026-110259 since 10/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 9.11 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Recursion
CWE: CWE-674 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: ASM 9.11

Timelineinfo

10/13/2026 CVE reserved
10/14/2026 +1 days Advisory disclosed
10/14/2026 +0 days VulDB entry created
10/14/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gitlab.ow2.org
Status: Confirmed

CVE: CVE-2026-110259 (🔒)
GCVE (CVE): GCVE-0-2026-110259
GCVE (VulDB): GCVE-100-419907

Entryinfo

Created: 10/14/2026 16:52
Changes: 10/14/2026 16:52 (76)
Complete: 🔍
Cache ID: 216::103

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