CVE-2025-8032

Description

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

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.04 LTS noble	Not affected
	22.04 LTS jammy	Not affected
thunderbird	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.04 LTS noble	Not affected
	22.04 LTS jammy	Fixed 1:140.7.1+build1-0ubuntu0.22.04.1
mozjs38	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	18.04 LTS bionic	Needs evaluation
mozjs52	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
	18.04 LTS bionic	Ignored
mozjs68	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
mozjs78	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Ignored
mozjs91	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Ignored
mozjs102	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.04 LTS noble	Ignored
	22.04 LTS jammy	Ignored
mozjs115	25.10 questing	Not in release
	25.04 plucky	Ignored
	24.04 LTS noble	Ignored
	22.04 LTS jammy	Not in release

Notes

mdeslaur

mozjs* contain a copy of the SpiderMonkey JavaScript engine. It is not feasible to backport security fixes to the mozjs* packages, as such, marking them as ignored. starting with Ubuntu 22.04, the firefox package is just a script that installs the Firefox snap starting with Ubuntu 24.04, the thunderbird package is just a script that installs the Thunderbird snap

Severity score breakdown

Parameter	Value
Base score	8.1 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References

Related Ubuntu Security Notices (USN)

USN-7991-1
Thunderbird vulnerabilities
2 February 2026

Cvss 3 Severity Score