CVE catalog

CVE-2026-92068

Site isolation issue in the Reader Mode component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

[CVE catalog]

Severity: Medium · CVSS 5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Published: Sep 15, 2026, 12:34:29 PM UTC
Updated: Sep 15, 2026, 1:17:01 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.10% · Oct 25, 2026

Site isolation issue in the Reader Mode component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	thunderbird	sid	`1:153.5.1esr-1`	fixed
Debian	thunderbird	forky	`1:153.5.0esr-1`	fixed
Debian	thunderbird	trixie	`1:140.12.0esr-1~deb13u1`	not affected
Debian	thunderbird	trixie-security	`1:153.5.1esr-1~deb13u2`	not affected
Debian	thunderbird	bookworm	`1:140.12.0esr-1~deb12u1`	not affected
Debian	thunderbird	bookworm-security	`1:153.5.1esr-1~deb12u1`	not affected
Cpe	firefox	Not reported	`156.0.0`	fixed
Cpe	thunderbird	Not reported	`156.0`	fixed
Ubuntu	mozjs52	18.04	`52.3.1-0ubuntu3`	vulnerable
Ubuntu	mozjs52	18.04	`52.3.1-7fakesync1`	vulnerable
Ubuntu	mozjs52	18.04	`52.8.1-0ubuntu0.18.04.1`	vulnerable
Ubuntu	mozjs52	18.04	`52.9.1-0ubuntu0.18.04.1`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu1`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu3`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu4`	vulnerable
Ubuntu	mozjs68	20.04	`68.5.0-1~fakesync`	vulnerable
Ubuntu	mozjs68	20.04	`68.5.0-2~fakesync`	vulnerable
Ubuntu	mozjs68	20.04	`68.6.0-1`	vulnerable
Ubuntu	mozjs68	20.04	`68.6.0-1ubuntu1`	vulnerable
Ubuntu	mozjs52	20.04	`52.9.1-1build1`	vulnerable
Ubuntu	mozjs52	20.04	`52.9.1-1ubuntu3`	vulnerable
Ubuntu	mozjs102	22.04	`102.11.0-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	22.04	`102.12.0-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	22.04	`102.13.0-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	22.04	`102.15.1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs78	22.04	`78.13.0-1`	vulnerable
Ubuntu	mozjs78	22.04	`78.15.0-2`	vulnerable
Ubuntu	mozjs78	22.04	`78.15.0-4ubuntu1`	vulnerable
Ubuntu	mozjs91	22.04	`91.5.1-0ubuntu1`	vulnerable
Ubuntu	mozjs91	22.04	`91.6.0-1`	vulnerable
Ubuntu	mozjs91	22.04	`91.6.0-2`	vulnerable
Ubuntu	mozjs91	22.04	`91.7.0-2`	vulnerable
Ubuntu	mozjs91	22.04	`91.10.0-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.1.2+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.3.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.3.1+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.3.2+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.4.0+build1.1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.4.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.5.0+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.5.1+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.6.1+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.7.0+build1-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.7.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.8.0+build2-0ubuntu1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.9.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:91.11.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.2.2+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.4.2+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.7.1+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.8.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.9.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.10.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.11.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.13.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.15.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:102.15.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.3.1+build1-0ubuntu0.22.04.2`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.4.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.5.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.6.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.8.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.9.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.10.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.11.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.12.0+build3-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.13.0+build5-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.15.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.16.0+build2-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:115.18.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:128.12.0+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	thunderbird	22.04	`1:140.7.1+build1-0ubuntu0.22.04.1`	vulnerable
Ubuntu	mozjs102	24.04	`102.15.1-1`	vulnerable
Ubuntu	mozjs102	24.04	`102.15.1-3ubuntu2`	vulnerable
Ubuntu	mozjs115	24.04	`115.3.0-0ubuntu1`	vulnerable
Ubuntu	mozjs115	24.04	`115.4.0-2`	vulnerable
Ubuntu	mozjs115	24.04	`115.5.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.6.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.7.0-4`	vulnerable
Ubuntu	mozjs115	24.04	`115.8.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.9.0-1`	vulnerable
Ubuntu	mozjs115	24.04	`115.9.0-1build1`	vulnerable
Ubuntu	mozjs115	24.04	`115.10.0-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	thunderbird	source	sid	`1:153.3.0esr-1`	not yet assigned	Not reported	Not reported
Debian	thunderbird	source	forky	`1:153.3.0esr-1`	not yet assigned	Not reported	Not reported
Debian	thunderbird	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	thunderbird	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Cpe	firefox	cpe	Not reported	`156.0.0`	Not reported	NVD-CVE-2026-92068	Not reported
Cpe	thunderbird	cpe	Not reported	`156.0`	Not reported	NVD-CVE-2026-92068	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[thunderbird]Not affected
Details (4)
- 1:140.12.0esr-1~deb12u1 · amd64 · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · arm64 · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-af]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-all]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-ar]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-ast]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-be]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-bg]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-br]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-ca]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-cak]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-cs]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-cy]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-da]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-de]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-dsb]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-el]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-en-ca]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-en-gb]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-es-ar]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
[thunderbird-l10n-es-es]Not affected
Source package: [thunderbird]
Details (4)
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm
- 1:140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  nvd · thunderbird · debian · bookworm

Next results

Observed: Oct 27, 2026, 7:29:18 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]