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CVE-2026-0818

Опубликовано: 28 янв. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 4.3

Описание

When a user explicitly requested Thunderbird to decrypt an inline OpenPGP message that was embedded in a text section of an email that was formatted and styled with HTML and CSS, then the decrypted contents were rendered in a context in which the CSS styles from the outer messages were active. If the user had additionally allowed loading of the remote content referenced by the outer email message, and the email was crafted by the sender using a combination of CSS rules and fonts and animations, then it was possible to extract the secret contents of the email. This vulnerability affects Thunderbird < 147.0.1 and Thunderbird < 140.7.1.

РелизСтатусПримечание
devel

not-affected

code not present
jammy

released

1:140.7.1+build1-0ubuntu0.22.04.1
noble

not-affected

code not present
questing

not-affected

code not present
upstream

needs-triage

Показывать по

EPSS

Процентиль: 0%
0.00006
Низкий

4.3 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.1
redhat
2 месяца назад

When a user explicitly requested Thunderbird to decrypt an inline OpenPGP message that was embedded in a text section of an email that was formatted and styled with HTML and CSS, then the decrypted contents were rendered in a context in which the CSS styles from the outer messages were active. If the user had additionally allowed loading of the remote content referenced by the outer email message, and the email was crafted by the sender using a combination of CSS rules and fonts and animations, then it was possible to extract the secret contents of the email. This vulnerability affects Thunderbird < 147.0.1 and Thunderbird < 140.7.1.

CVSS3: 4.3
nvd
2 месяца назад

When a user explicitly requested Thunderbird to decrypt an inline OpenPGP message that was embedded in a text section of an email that was formatted and styled with HTML and CSS, then the decrypted contents were rendered in a context in which the CSS styles from the outer messages were active. If the user had additionally allowed loading of the remote content referenced by the outer email message, and the email was crafted by the sender using a combination of CSS rules and fonts and animations, then it was possible to extract the secret contents of the email. This vulnerability affects Thunderbird < 147.0.1 and Thunderbird < 140.7.1.

CVSS3: 4.3
debian
2 месяца назад

When a user explicitly requested Thunderbird to decrypt an inline Open ...

suse-cvrf
около 2 месяцев назад

Security update for MozillaThunderbird

CVSS3: 4.3
github
2 месяца назад

CSS-based exfiltration of the content from partially encrypted emails when allowing remote content. This vulnerability affects Thunderbird < 147.0.1 and Thunderbird < 140.7.1.

EPSS

Процентиль: 0%
0.00006
Низкий

4.3 Medium

CVSS3