UBUNTU-CVE-2026-56091

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Source
https://ubuntu.com/security/CVE-2026-56091
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-56091
Upstream
  • CVE-2026-56091
Published
2026-06-25T09:16:00Z
Modified
2026-06-29T23:19:15.268511855Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/RE:L/U:Amber CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass. This vulnerability is similar to https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the shiro-guice module instead of the shiro-spring module. This issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using shiro-guice module in a web servlet context. Upgrade to version 3.0.0 or later, which fixes the issue.

References

Affected packages

Ubuntu:20.04:LTS
shiro

Package

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

Affected ranges

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

Affected versions

1.*
1.3.2-4
1.3.2-4ubuntu0.1
1.3.2-4ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-4ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json"
Ubuntu:22.04:LTS
shiro

Package

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

Affected ranges

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

Affected versions

1.*
1.3.2-4
1.3.2-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json"
Ubuntu:25.10
shiro

Package

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

Affected ranges

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

Affected versions

1.*
1.3.2-6ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-6ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json"
Ubuntu:26.04:LTS
shiro

Package

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

Affected ranges

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

Affected versions

1.*
1.3.2-6ubuntu1
1.3.2-6ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-6ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json"
Ubuntu:Pro:16.04:LTS
shiro

Package

Name
shiro
Purl
pkg:deb/ubuntu/shiro?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

1.*
1.2.4-1
1.2.4-1ubuntu0.1~esm1
1.2.4-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libshiro-java",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json"
Ubuntu:Pro:18.04:LTS
shiro

Package

Name
shiro
Purl
pkg:deb/ubuntu/shiro?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1.*
1.3.2-2
1.3.2-3~18.04
1.3.2-3~18.04.1
1.3.2-3ubuntu0.18.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-3ubuntu0.18.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json"
Ubuntu:Pro:24.04:LTS
shiro

Package

Name
shiro
Purl
pkg:deb/ubuntu/shiro?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

1.*
1.3.2-5
1.3.2-5ubuntu0.24.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-5ubuntu0.24.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56091.json"