UBUNTU-CVE-2026-8257

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Source
https://ubuntu.com/security/CVE-2026-8257
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8257.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-8257
Upstream
  • CVE-2026-8257
Published
2026-05-11T02:16:00Z
Modified
2026-05-25T09:30:11.613746402Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The exploit is now public and may be used. The patch is named 1251efbc1ea471c1311d2726b2bbe061ff2a291c. It is suggested to install a patch to address this issue.

References

Affected packages

Ubuntu:20.04:LTS / binaryen

Package

Name
binaryen
Purl
pkg:deb/ubuntu/binaryen?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other
89-1
90-1
91-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "91-1",
            "binary_name": "binaryen"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8257.json"

Ubuntu:22.04:LTS / binaryen

Package

Name
binaryen
Purl
pkg:deb/ubuntu/binaryen?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other
99-3
105-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "105-1",
            "binary_name": "binaryen"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8257.json"

Ubuntu:24.04:LTS / binaryen

Package

Name
binaryen
Purl
pkg:deb/ubuntu/binaryen?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other
108-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "108-1",
            "binary_name": "binaryen"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8257.json"

Ubuntu:25.10 / binaryen

Package

Name
binaryen
Purl
pkg:deb/ubuntu/binaryen?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other
120-3
120-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "120-4",
            "binary_name": "binaryen"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8257.json"

Ubuntu:26.04:LTS / binaryen

Package

Name
binaryen
Purl
pkg:deb/ubuntu/binaryen?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other
120-4
120-4build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "120-4build1",
            "binary_name": "binaryen"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8257.json"