UBUNTU-CVE-2026-5080

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Source

https://ubuntu.com/security/CVE-2026-5080

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-5080

Upstream

CVE-2026-5080

Published

2026-04-30T12:16:00Z

Modified

2026-05-26T19:29:27.630750067Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Dancer::Session::Abstract versions through 1.3522 for Perl generates session ids insecurely. The session id is generated from summing the character codepoints of the absolute pathname with the process id, the epoch time and calls to the built-in rand() function to return a number between 0 and 999-billion, and concatenating that result three times. The path name might be known or guessed by an attacker, especially for applications known to be written using Dancer with standard installation locations. The epoch time can be guessed by an attacker, and may be leaked in the HTTP header. The process id comes from a small set of numbers, and workers may have sequential process ids. The built-in rand() function is seeded with 32-bits and is considered unsuitable for security applications. Predictable session ids could allow an attacker to gain access to systems.

References

Affected packages

Ubuntu:16.04:LTS

libdancer-perl

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3140+dfsg-1

1.3202+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libdancer-perl",
            "binary_version": "1.3202+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json"

Ubuntu:18.04:LTS

libdancer-perl

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3202+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libdancer-perl",
            "binary_version": "1.3202+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json"

Ubuntu:20.04:LTS

libdancer-perl

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3500+dfsg-1

1.3513+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libdancer-perl",
            "binary_version": "1.3513+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json"

Ubuntu:22.04:LTS

libdancer-perl

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3513+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libdancer-perl",
            "binary_version": "1.3513+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json"

Ubuntu:24.04:LTS

libdancer-perl

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3521+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libdancer-perl",
            "binary_version": "1.3521+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json"

Ubuntu:25.10

libdancer-perl

Package

Name: libdancer-perl
Purl: pkg:deb/ubuntu/libdancer-perl?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3521+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libdancer-perl",
            "binary_version": "1.3521+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json"

Ubuntu:26.04:LTS

libdancer-perl

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3521+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libdancer-perl",
            "binary_version": "1.3521+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5080.json"