DEBIAN-CVE-2025-9901

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Source
https://security-tracker.debian.org/tracker/CVE-2025-9901
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-9901.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-9901
Upstream
Published
2025-09-03T13:15:50Z
Modified
2026-09-01T20:05:59Z
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
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

Debian:12 / libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/debian/libsoup2.4?arch=source&distro=bookworm

Affected ranges

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

Affected versions

2.*
2.74.3-1
2.74.3-1+deb12u1
2.74.3-2
2.74.3-3
2.74.3-3.1~exp1
2.74.3-3.1~exp2
2.74.3-3.1~exp3
2.74.3-5
2.74.3-6
2.74.3-7
2.74.3-8
2.74.3-8.1
2.74.3-9
2.74.3-10
2.74.3-10.1
2.74.3-11

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-9901.json"

Debian:13 / libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/debian/libsoup2.4?arch=source&distro=trixie

Affected ranges

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

Affected versions

2.*
2.74.3-10.1
2.74.3-11

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-9901.json"

Debian:12 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/debian/libsoup3?arch=source&distro=bookworm

Affected ranges

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

Affected versions

3.*
3.2.2-2
3.2.3-0+deb12u1
3.2.3-0+deb12u2
3.3.1-1
3.4.0-1
3.4.1-1
3.4.2-1
3.4.2-2
3.4.2-3
3.4.2-4
3.4.3-1
3.4.4-1
3.4.4-2
3.4.4-3
3.4.4-4
3.4.4-5
3.5.2-1
3.6.0-1
3.6.0-2
3.6.0-3
3.6.0-4
3.6.1-1
3.6.4-1
3.6.4-2
3.6.4-3
3.6.5-1
3.6.5-2
3.6.5-3
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-8
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-9901.json"

Debian:13 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/debian/libsoup3?arch=source&distro=trixie

Affected ranges

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

Affected versions

3.*
3.6.5-3
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-8
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-9901.json"

Debian:14 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/debian/libsoup3?arch=source&distro=forky

Affected ranges

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

Affected versions

3.*
3.6.5-3
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-8
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-9901.json"