UBUNTU-CVE-2026-93709

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Source
https://ubuntu.com/security/CVE-2026-93709
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93709.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-93709
Upstream
Published
2026-09-22T01:16:00Z
Modified
2026-09-23T23:40:09Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler. The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard. The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.

References

Affected packages

Ubuntu:16.04:LTS
libdancer2-perl

Package

Name
libdancer2-perl
Purl
pkg:deb/ubuntu/libdancer2-perl?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.160003+dfsg-1
0.163000+dfsg-1
0.166001+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libdancer2-perl",
            "binary_version":  "0.166001+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93709.json"
Ubuntu:18.04:LTS
libdancer2-perl

Package

Name
libdancer2-perl
Purl
pkg:deb/ubuntu/libdancer2-perl?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.205000+dfsg-1
0.205002+dfsg-1
0.205002+dfsg-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libdancer2-perl",
            "binary_version":  "0.205002+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93709.json"
Ubuntu:20.04:LTS
libdancer2-perl

Package

Name
libdancer2-perl
Purl
pkg:deb/ubuntu/libdancer2-perl?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.208001+dfsg-1
0.208002+dfsg-1
0.300000+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libdancer2-perl",
            "binary_version":  "0.300000+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93709.json"
Ubuntu:22.04:LTS
libdancer2-perl

Package

Name
libdancer2-perl
Purl
pkg:deb/ubuntu/libdancer2-perl?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*
0.300005+dfsg-1
0.301004+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libdancer2-perl",
            "binary_version":  "0.301004+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93709.json"
Ubuntu:24.04:LTS
libdancer2-perl

Package

Name
libdancer2-perl
Purl
pkg:deb/ubuntu/libdancer2-perl?arch=source&distro=noble

Affected ranges

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

Affected versions

0.*
0.400001+dfsg-1
1.*
1.0.0+dfsg-1
1.1.0+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libdancer2-perl",
            "binary_version":  "1.1.0+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93709.json"
Ubuntu:26.04:LTS
libdancer2-perl

Package

Name
libdancer2-perl
Purl
pkg:deb/ubuntu/libdancer2-perl?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.1.2+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libdancer2-perl",
            "binary_version":  "1.1.2+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93709.json"