Mozilla Firefox up to 140 XSLT Document cross-domain policy

CVSS Meta Temp Score
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CTI Interest Score
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4.1$5k-$25k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Mozilla Firefox up to 140. Impacted is an unknown function of the component XSLT Document Handler. The manipulation leads to cross-domain policy. This vulnerability is listed as CVE-2025-8032. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Firefox up to 140. This issue affects some unknown functionality of the component XSLT Document Handler. The manipulation with an unknown input leads to a cross-domain policy vulnerability. Using CWE to declare the problem leads to CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. Impacted is integrity. The summary by CVE is:

XSLT document loading did not correctly propagate the source document which bypassed its CSP. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.

The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2025-8032 since 07/22/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/08/2025).

The vulnerability scanner Nessus provides a plugin with the ID 242648 (Debian dsa-5964 : firefox-esr - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 141 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (242648) and CERT Bund (WID-SEC-2025-1623). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • IGEL OS
  • Mozilla Firefox
  • Mozilla Firefox ESR
  • Mozilla Thunderbird

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross-domain policy
CWE: CWE-942 / CWE-346 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 242648
Nessus Name: Debian dsa-5964 : firefox-esr - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Firefox 141

Timelineinfo

07/22/2025 CVE reserved
07/23/2025 +1 days Advisory disclosed
07/23/2025 +0 days VulDB entry created
08/08/2025 +16 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2025-8032 (🔒)
GCVE (CVE): GCVE-0-2025-8032
GCVE (VulDB): GCVE-100-317333
CERT Bund: WID-SEC-2025-1623 - Mozilla Firefox , Firefox ESR und Thunderbird: Mehrere Schwachstellen

Entryinfo

Created: 07/23/2025 08:24
Updated: 08/08/2025 19:38
Changes: 07/23/2025 08:24 (56), 07/23/2025 17:06 (1), 07/24/2025 20:34 (2), 07/27/2025 19:16 (7), 07/31/2025 21:54 (1), 08/08/2025 19:38 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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