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CVE Vulnerabilities

CVE-2025-10529

Permissive Cross-domain Security Policy with Untrusted Domains

Published: Sep 16, 2025 | Modified: Nov 03, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
6.1 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2025-10529
CWEhttps://cwe.mitre.org/data/definitions/942.html

Same-origin policy bypass in the Layout component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.

Weakness

The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.

Affected Software

NameVendorStart VersionEnd Version
FirefoxMozilla*140.3.0 (excluding)
FirefoxMozilla*143.0 (excluding)
ThunderbirdMozilla*143.0 (excluding)
Red Hat Enterprise Linux 10RedHatfirefox-0:140.3.0-1.el10_0*
Red Hat Enterprise Linux 10RedHatthunderbird-0:140.3.0-1.el10_0*
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHatfirefox-0:140.3.0-1.el7_9*
Red Hat Enterprise Linux 8RedHatfirefox-0:140.3.0-1.el8_10*
Red Hat Enterprise Linux 8RedHatthunderbird-0:140.3.0-1.el8_10*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatthunderbird-0:140.3.0-1.el8_2*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatfirefox-0:140.3.0-1.el8_2*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatthunderbird-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatfirefox-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatthunderbird-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatfirefox-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatthunderbird-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatfirefox-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatthunderbird-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatfirefox-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatthunderbird-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatfirefox-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 9RedHatfirefox-0:140.3.0-1.el9_6*
Red Hat Enterprise Linux 9RedHatthunderbird-0:140.3.0-1.el9_6*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el9_0*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el9_0*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el9_2*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el9_2*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatthunderbird-0:140.3.0-1.el9_4*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatfirefox-0:140.3.0-1.el9_4*
Mozjs102Ubuntuesm-apps/noble*
Mozjs102Ubuntujammy*
Mozjs102Ubuntunoble*
Mozjs115Ubuntunoble*
Mozjs115Ubuntuplucky*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs68Ubuntuesm-infra/focal*
Mozjs78Ubuntuesm-apps/jammy*
Mozjs78Ubuntujammy*
Mozjs91Ubuntujammy*
ThunderbirdUbuntujammy*

Extended Description

If a cross-domain policy file includes domains that should not be trusted, such as when using wildcards under a high-level domain, then the application could be attacked by these untrusted domains. In many cases, the attack can be launched without the victim even being aware of it.

Potential Mitigations

References

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