UBUNTU-CVE-2025-9901

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Source
https://ubuntu.com/security/CVE-2025-9901
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-9901
Upstream
Published
2025-09-03T13:15:00Z
Modified
2026-05-20T16:24:05.636216672Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

A flaw was found in libsoup’s caching mechanism, SoupCache, where the HTTP Vary header is ignored when evaluating cached responses. This header ensures that responses vary appropriately based on request headers such as language or authentication. Without this check, cached content can be incorrectly reused across different requests, potentially exposing sensitive user information. While the issue is unlikely to affect everyday desktop use, it could result in confidentiality breaches in proxy or multi-user environments.

References

Affected packages

Ubuntu:22.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.72.0-3ubuntu3
2.74.1-1
2.74.2-2
2.74.2-3
2.74.2-3ubuntu0.1
2.74.2-3ubuntu0.2
2.74.2-3ubuntu0.3
2.74.2-3ubuntu0.4
2.74.2-3ubuntu0.5
2.74.2-3ubuntu0.6

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.74.2-3ubuntu0.6"
        },
        {
            "binary_name": "libsoup-gnome2.4-1",
            "binary_version": "2.74.2-3ubuntu0.6"
        },
        {
            "binary_name": "libsoup2.4-1",
            "binary_version": "2.74.2-3ubuntu0.6"
        },
        {
            "binary_name": "libsoup2.4-common",
            "binary_version": "2.74.2-3ubuntu0.6"
        },
        {
            "binary_name": "libsoup2.4-tests",
            "binary_version": "2.74.2-3ubuntu0.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
Ubuntu:24.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.74.3-1
2.74.3-2
2.74.3-3
2.74.3-6
2.74.3-6build1
2.74.3-6ubuntu1
2.74.3-6ubuntu1.1
2.74.3-6ubuntu1.2
2.74.3-6ubuntu1.3
2.74.3-6ubuntu1.4
2.74.3-6ubuntu1.5
2.74.3-6ubuntu1.6

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.74.3-6ubuntu1.6"
        },
        {
            "binary_name": "libsoup-2.4-1",
            "binary_version": "2.74.3-6ubuntu1.6"
        },
        {
            "binary_name": "libsoup-gnome-2.4-1",
            "binary_version": "2.74.3-6ubuntu1.6"
        },
        {
            "binary_name": "libsoup2.4-common",
            "binary_version": "2.74.3-6ubuntu1.6"
        },
        {
            "binary_name": "libsoup2.4-tests",
            "binary_version": "2.74.3-6ubuntu1.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3?arch=source&distro=noble

Affected ranges

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

Affected versions

3.*
3.4.2-4
3.4.4-1
3.4.4-2
3.4.4-4
3.4.4-5
3.4.4-5build1
3.4.4-5build2
3.4.4-5ubuntu0.1
3.4.4-5ubuntu0.2
3.4.4-5ubuntu0.3
3.4.4-5ubuntu0.4
3.4.4-5ubuntu0.5
3.4.4-5ubuntu0.6
3.4.4-5ubuntu0.7

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-3.0",
            "binary_version": "3.4.4-5ubuntu0.7"
        },
        {
            "binary_name": "libsoup-3.0-0",
            "binary_version": "3.4.4-5ubuntu0.7"
        },
        {
            "binary_name": "libsoup-3.0-common",
            "binary_version": "3.4.4-5ubuntu0.7"
        },
        {
            "binary_name": "libsoup-3.0-tests",
            "binary_version": "3.4.4-5ubuntu0.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
Ubuntu:25.10
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.74.3-10
2.74.3-10.1
2.74.3-10.1ubuntu1
2.74.3-10.1ubuntu2
2.74.3-10.1ubuntu3
2.74.3-10.1ubuntu4

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.74.3-10.1ubuntu4"
        },
        {
            "binary_name": "libsoup-2.4-1",
            "binary_version": "2.74.3-10.1ubuntu4"
        },
        {
            "binary_name": "libsoup-gnome-2.4-1",
            "binary_version": "2.74.3-10.1ubuntu4"
        },
        {
            "binary_name": "libsoup2.4-common",
            "binary_version": "2.74.3-10.1ubuntu4"
        },
        {
            "binary_name": "libsoup2.4-tests",
            "binary_version": "2.74.3-10.1ubuntu4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3?arch=source&distro=questing

Affected ranges

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

Affected versions

3.*
3.6.5-1
3.6.5-1ubuntu1
3.6.5-3
3.6.5-4
3.6.5-4ubuntu0.1
3.6.5-4ubuntu0.2

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-3.0",
            "binary_version": "3.6.5-4ubuntu0.2"
        },
        {
            "binary_name": "libsoup-3.0-0",
            "binary_version": "3.6.5-4ubuntu0.2"
        },
        {
            "binary_name": "libsoup-3.0-common",
            "binary_version": "3.6.5-4ubuntu0.2"
        },
        {
            "binary_name": "libsoup-3.0-tests",
            "binary_version": "3.6.5-4ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
Ubuntu:26.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.74.3-10.1ubuntu4
2.74.3-10.1ubuntu5

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.74.3-10.1ubuntu5"
        },
        {
            "binary_name": "libsoup-2.4-1",
            "binary_version": "2.74.3-10.1ubuntu5"
        },
        {
            "binary_name": "libsoup-gnome-2.4-1",
            "binary_version": "2.74.3-10.1ubuntu5"
        },
        {
            "binary_name": "libsoup2.4-common",
            "binary_version": "2.74.3-10.1ubuntu5"
        },
        {
            "binary_name": "libsoup2.4-tests",
            "binary_version": "2.74.3-10.1ubuntu5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-3.0",
            "binary_version": "3.6.6-1"
        },
        {
            "binary_name": "libsoup-3.0-0",
            "binary_version": "3.6.6-1"
        },
        {
            "binary_name": "libsoup-3.0-common",
            "binary_version": "3.6.6-1"
        },
        {
            "binary_name": "libsoup-3.0-tests",
            "binary_version": "3.6.6-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
Ubuntu:Pro:16.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

2.*
2.50.0-2debian1
2.52.1-1
2.52.2-1
2.52.2-1ubuntu0.1
2.52.2-1ubuntu0.2
2.52.2-1ubuntu0.3
2.52.2-1ubuntu0.3+esm1
2.52.2-1ubuntu0.3+esm2
2.52.2-1ubuntu0.3+esm3
2.52.2-1ubuntu0.3+esm4
2.52.2-1ubuntu0.3+esm5

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.52.2-1ubuntu0.3+esm5"
        },
        {
            "binary_name": "libsoup-gnome2.4-1",
            "binary_version": "2.52.2-1ubuntu0.3+esm5"
        },
        {
            "binary_name": "libsoup2.4-1",
            "binary_version": "2.52.2-1ubuntu0.3+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
Ubuntu:Pro:18.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

2.*
2.60.1-1
2.60.2-1
2.60.2-2
2.60.3-1
2.61.90-1
2.62.0-1
2.62.1-1
2.62.1-1ubuntu0.1
2.62.1-1ubuntu0.3
2.62.1-1ubuntu0.4
2.62.1-1ubuntu0.4+esm1
2.62.1-1ubuntu0.4+esm2
2.62.1-1ubuntu0.4+esm3
2.62.1-1ubuntu0.4+esm4
2.62.1-1ubuntu0.4+esm5
2.62.1-1ubuntu0.4+esm6

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.62.1-1ubuntu0.4+esm6"
        },
        {
            "binary_name": "libsoup-gnome2.4-1",
            "binary_version": "2.62.1-1ubuntu0.4+esm6"
        },
        {
            "binary_name": "libsoup2.4-1",
            "binary_version": "2.62.1-1ubuntu0.4+esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
Ubuntu:Pro:20.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

2.*
2.68.2-0ubuntu1
2.68.2-1
2.68.2-2
2.68.2-2build2
2.69.90-1
2.70.0-1
2.70.0-1ubuntu0.1
2.70.0-1ubuntu0.2
2.70.0-1ubuntu0.3
2.70.0-1ubuntu0.4
2.70.0-1ubuntu0.5
2.70.0-1ubuntu0.5+esm1

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.70.0-1ubuntu0.5+esm1"
        },
        {
            "binary_name": "libsoup-gnome2.4-1",
            "binary_version": "2.70.0-1ubuntu0.5+esm1"
        },
        {
            "binary_name": "libsoup2.4-1",
            "binary_version": "2.70.0-1ubuntu0.5+esm1"
        },
        {
            "binary_name": "libsoup2.4-tests",
            "binary_version": "2.70.0-1ubuntu0.5+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"
Ubuntu:Pro:22.04:LTS
libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

3.*
3.0.4-2
3.0.4-3
3.0.5-1
3.0.7-0ubuntu1
3.0.7-0ubuntu1+esm1
3.0.7-0ubuntu1+esm2
3.0.7-0ubuntu1+esm3
3.0.7-0ubuntu1+esm4
3.0.7-0ubuntu1+esm5
3.0.7-0ubuntu1+esm6
3.0.7-0ubuntu1+esm7

Ecosystem specific 

{
    "priority_reason": "Upstream has deemed this to be a low priority issue",
    "binaries": [
        {
            "binary_name": "gir1.2-soup-3.0",
            "binary_version": "3.0.7-0ubuntu1+esm7"
        },
        {
            "binary_name": "libsoup-3.0-0",
            "binary_version": "3.0.7-0ubuntu1+esm7"
        },
        {
            "binary_name": "libsoup-3.0-common",
            "binary_version": "3.0.7-0ubuntu1+esm7"
        },
        {
            "binary_name": "libsoup-3.0-tests",
            "binary_version": "3.0.7-0ubuntu1+esm7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9901.json"