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CVE-2026-110260

OW2 ASM 3.0 before 9.11 Quadratic Memory Allocation via Exception Handlers

6.8 MediumFix available

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.18%Unchanged since Oct 15, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.8

OW2 ASM 3.0 before 9.11 Quadratic Memory Allocation via Exception Handlers

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
CVE-2026-110260
CVSS 4.0
6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-407
Updated
2026-11-02
EUVDEUVD-2026-101214 6.8

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
EUVD-2026-101214
CVSS 4.0
6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-f8m6-wmrx-8vh2 6.8

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter...

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
GHSA-f8m6-wmrx-8vh2
CVSS 4.0
6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-407
Updated
2026-11-02
NVD 6.8

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
CVE-2026-110260
CVSS 4.0
6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-407
Updated
2026-11-02
OSV 6.8

OW2 ASM 3.0 before 9.11 Quadratic Memory Allocation via Exception Handlers

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
CVE-2026-110260
CVSS 4.0
6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-407
Updated
2026-11-02
OSVDEBIAN-CVE-2026-110260 6.8

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
DEBIAN-CVE-2026-110260
CVSS 4.0
6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
Show 4 moreShow less
OSVRHSA-2026:83847 5.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record
RHSA-2026:83847
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-110260 6.8

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
UBUNTU-CVE-2026-110260
CVSS 4.0
6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-108369 No score

CVE-2026-110260 affecting package javapackages-bootstrap 1.14.0-4

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
AZL-108369
Updated
2026-11-02
OSVAZL-108408 No score

CVE-2026-110260 affecting package objectweb-asm for versions less than 9.11.1-1

OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.

Record
AZL-108408
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
javapackages-bootstrap
Azure Linux:3
 through 1.14.0-4 None known
objectweb-asm
Azure Linux:3
 before 9.11.1-1
9.11.1-1
asm
Debian:12
 All versions, plus listed versions
9.10.1-19.11.1-19.4-19.5-19.7-1
Show 5 moreShow less
9.7-29.7.1-19.8-19.8-29.9.1-1
 None known
asm
Debian:13
 All versions, plus listed versions
9.10.1-19.11.1-19.8-19.8-29.9.1-1
 None known
asm
Debian:14
 before 9.11.1-1, plus listed versions
9.10.1-19.8-19.8-29.9.1-1
9.11.1-1
maven3.9
Red Hat:hummingbird:1
From an advisory covering 5 CVEs
 before 0:3.9.16-0.4.hum1
0:3.9.16-0.4.hum1
maven3.9-lib
Red Hat:hummingbird:1
From an advisory covering 5 CVEs
 before 0:3.9.16-0.4.hum1
0:3.9.16-0.4.hum1
asm
Ubuntu:18.04:LTS
 All versions, plus listed versions
6.0~alpha-16.0~alpha-26.0-17.0-1~18.04
 None known
asm
Ubuntu:20.04:LTS
 All versions, plus listed versions
7.1-27.2-1
 None known
asm
Ubuntu:22.04:LTS
 All versions, plus listed versions
9.1-19.2-1
 None known
asm
Ubuntu:24.04:LTS
 All versions, plus listed versions
9.4-19.5-19.6~us1-0ubuntu19.7-1
 None known
asm
Ubuntu:26.10
 All versions, plus listed versions
9.9.1-1
 None known
asm
Ubuntu:26.04:LTS
 All versions, plus listed versions
9.8-19.8-29.9.1-1
 None known

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-110260 is a medium vulnerability (CVSS 6.8) in Ow2 Asm, published October 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. Fixed in objectweb-asm 9.11.1-1.

References

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