DEBIAN-CVE-2025-5266

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Source
https://security-tracker.debian.org/tracker/CVE-2025-5266
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5266.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-5266
Upstream
Downstream
Published
2025-05-27T13:15:22Z
Modified
2026-09-01T20:05:53Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

References

Affected packages

Debian:12
firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
128.11.0esr-1~deb12u1

Affected versions

102.*
102.11.0esr-1
102.12.0esr-1~deb10u1
102.12.0esr-1~deb11u1
102.12.0esr-1~deb12u1
102.12.0esr-1
102.13.0esr-1~deb10u1
102.13.0esr-1~deb11u1
102.13.0esr-1~deb12u1
102.13.0esr-1
102.14.0esr-1~deb10u1
102.14.0esr-1~deb11u1
102.14.0esr-1~deb12u1
102.15.0esr-1~deb10u1
102.15.0esr-1~deb11u1
102.15.0esr-1~deb12u1
102.15.1esr-1~deb10u1
102.15.1esr-1~deb11u1
102.15.1esr-1~deb12u1
115.*
115.0.2esr-1
115.1.0esr-1
115.2.0esr-1
115.2.1esr-1
115.3.0esr-1~deb10u1
115.3.0esr-1~deb11u1
115.3.0esr-1~deb12u1
115.3.0esr-1
115.3.1esr-1~deb10u1
115.3.1esr-1~deb11u1
115.4.0esr-1~deb10u1
115.4.0esr-1~deb11u1
115.4.0esr-1~deb12u1
115.4.0esr-1
115.5.0esr-1~deb10u1
115.5.0esr-1~deb11u1
115.5.0esr-1~deb12u1
115.5.0esr-1
115.6.0esr-1~deb10u1
115.6.0esr-1~deb11u1
115.6.0esr-1~deb12u1
115.6.0esr-1
115.7.0esr-1~deb10u1
115.7.0esr-1~deb11u1
115.7.0esr-1~deb12u1
115.7.0esr-1
115.8.0esr-1~deb10u1
115.8.0esr-1~deb11u1
115.8.0esr-1~deb12u1
115.8.0esr-1
115.9.0esr-1~deb11u1
115.9.0esr-1~deb12u1
115.9.0esr-1
115.9.0esr-2
115.9.1esr-1~deb10u1
115.9.1esr-1~deb11u1
115.9.1esr-1~deb12u1
115.9.1esr-1
115.10.0esr-1~deb10u1
115.10.0esr-1~deb11u1
115.10.0esr-1~deb12u1
115.10.0esr-1
115.11.0esr-1~deb10u1
115.11.0esr-1~deb11u1
115.11.0esr-1~deb12u1
115.11.0esr-1
115.12.0esr-1~deb10u1
115.12.0esr-1~deb11u1
115.12.0esr-1~deb12u1
115.12.0esr-1
115.13.0esr-1~deb11u1
115.13.0esr-1~deb12u1
115.13.0esr-1
115.13.0esr-2
115.14.0esr-1~deb11u1
115.14.0esr-1~deb12u1
115.14.0esr-1
115.15.0esr-1~deb11u1
115.15.0esr-1~deb12u1
115.15.0esr-1
128.*
128.3.0esr-1~deb11u1
128.3.0esr-1~deb11u2
128.3.0esr-1~deb12u1
128.3.0esr-1
128.3.0esr-2
128.3.1esr-1~deb11u1
128.3.1esr-1~deb12u1
128.3.1esr-1
128.3.1esr-2
128.4.0esr-1~deb11u1
128.4.0esr-1~deb12u1
128.4.0esr-1
128.5.0esr-1~deb11u1
128.5.0esr-1~deb12u1
128.5.0esr-1
128.5.1esr-1
128.6.0esr-1~deb11u1
128.6.0esr-1~deb11u2
128.6.0esr-1~deb11u3
128.6.0esr-1~deb12u1
128.6.0esr-1
128.6.0esr-2
128.6.0esr-3
128.6.0esr-4
128.7.0esr-1~deb11u1
128.7.0esr-1~deb12u1
128.7.0esr-1
128.8.0esr-1~deb11u1
128.8.0esr-1~deb12u1
128.8.0esr-1
128.9.0esr-1~deb11u1
128.9.0esr-1~deb12u1
128.9.0esr-1
128.9.0esr-2
128.10.0esr-1~deb12u1
128.10.0esr-1
128.10.1esr-1~deb11u1
128.10.1esr-1~deb12u1
128.10.1esr-1
128.11.0esr-1~deb11u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5266.json"
thunderbird

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:128.11.0esr-1~deb12u1

Affected versions

1:102.*
1:102.11.0-1
1:102.12.0-1~deb10u1
1:102.12.0-1~deb11u1
1:102.12.0-1~deb12u1
1:102.12.0-1
1:102.13.0-1~deb10u1
1:102.13.0-1~deb11u1
1:102.13.0-1~deb12u1
1:102.13.0-1
1:102.13.1-1~deb10u1
1:102.13.1-1~deb11u1
1:102.13.1-1~deb12u1
1:102.13.1-1
1:102.14.0-1~deb10u1
1:102.14.0-1~deb11u1
1:102.14.0-1~deb12u1
1:102.15.0-1~deb10u1
1:102.15.0-1~deb11u1
1:102.15.0-1~deb12u1
1:102.15.1-1~deb10u1
1:102.15.1-1~deb11u1
1:102.15.1-1~deb12u1
1:103.*
1:103.0~b5-1
1:104.*
1:104.0~b2-1
1:110.*
1:110.0~b4-1
1:112.*
1:112.0~b1-1
1:113.*
1:113.0~b3-1
1:114.*
1:114.0~b2-1
1:115.*
1:115.0~b4-1
1:115.0~b6-1
1:115.0-1
1:115.0.1-1
1:115.0.1-2
1:115.1.0-1
1:115.1.1-1
1:115.2.0-1
1:115.2.2-1
1:115.3.0-1~deb12u1
1:115.3.0-1
1:115.3.1-1~deb10u1
1:115.3.1-1~deb11u1
1:115.3.1-1~deb12u1
1:115.3.1-1
1:115.4.1-1~deb10u1
1:115.4.1-1~deb11u1
1:115.4.1-1~deb12u1
1:115.4.1-1
1:115.5.0-1~deb10u1
1:115.5.0-1~deb11u1
1:115.5.0-1~deb12u1
1:115.5.0-1
1:115.5.1-1
1:115.5.2-1
1:115.6.0-1~deb10u1
1:115.6.0-1~deb11u1
1:115.6.0-1~deb12u1
1:115.6.0-1
1:115.7.0-1~deb10u1
1:115.7.0-1~deb11u1
1:115.7.0-1~deb12u1
1:115.7.0-1
1:115.8.0-1~deb10u1
1:115.8.0-1~deb11u1
1:115.8.0-1~deb12u1
1:115.8.0-1
1:115.8.1-1
1:115.9.0-1~deb10u1
1:115.9.0-1~deb11u1
1:115.9.0-1~deb12u1
1:115.9.0-1
1:115.10.1-1~deb10u1
1:115.10.1-1~deb11u1
1:115.10.1-1~deb12u1
1:115.10.1-1
1:115.11.0-1~deb10u1
1:115.11.0-1~deb11u1
1:115.11.0-1~deb12u1
1:115.11.0-1
1:115.12.0-1~deb10u1
1:115.12.0-1~deb11u1
1:115.12.0-1~deb12u1
1:115.12.0-1
1:115.13.0-1~deb11u1
1:115.13.0-1~deb12u1
1:115.13.0-1
1:115.14.0-1~deb11u1
1:115.14.0-1~deb12u1
1:115.15.0-1~deb11u1
1:115.15.0-1~deb12u1
1:115.16.0esr-1~deb11u1
1:115.16.0esr-1~deb12u1
1:116.*
1:116.0~b7-1
1:117.*
1:117.0~b5-1
1:120.*
1:120.0~b1-1
1:121.*
1:121.0~b3-1
1:122.*
1:122.0~b2-1
1:124.*
1:124.0~b5-1
1:125.*
1:125.0~b3-1
1:127.*
1:127.0~b5-1
1:128.*
1:128.0~b5-1
1:128.0esr-1
1:128.1.0esr-1
1:128.1.1esr-1
1:128.2.0esr-1
1:128.2.1esr-1
1:128.2.3esr-1
1:128.3.0esr-1
1:128.3.2esr-1
1:128.4.0esr-1~deb11u1
1:128.4.0esr-1~deb12u1
1:128.4.0esr-1
1:128.4.2esr-1
1:128.4.3esr-1~deb11u1
1:128.4.3esr-1~deb12u1
1:128.4.3esr-1
1:128.5.0esr-1~deb11u1
1:128.5.0esr-1~deb12u1
1:128.5.0esr-1
1:128.5.2esr-1
1:128.6.0esr-1~deb11u1
1:128.6.0esr-1~deb12u1
1:128.6.0esr-1
1:128.7.0esr-1~deb11u1
1:128.7.0esr-1~deb12u1
1:128.7.0esr-1
1:128.8.0esr-1~deb11u1
1:128.8.0esr-1~deb12u1
1:128.8.0esr-1
1:128.9.0esr-1~deb11u1
1:128.9.0esr-1~deb12u1
1:128.9.0esr-1
1:128.10.0esr-1~deb11u1
1:128.10.0esr-1~deb12u1
1:128.10.0esr-1
1:128.10.1esr-1~deb11u1
1:128.10.1esr-1~deb12u1
1:128.10.1esr-1
1:128.11.0esr-1~deb11u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5266.json"
Debian:13
firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
128.11.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5266.json"
thunderbird

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:128.11.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5266.json"
Debian:14
firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
128.11.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5266.json"
thunderbird

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:128.11.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5266.json"