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CVE-2026-48821

Опубликовано: 17 июн. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 5.8

Описание

Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a DOM-based Cross-Site Scripting (XSS) vulnerability in the Thumbnail Synchronizer feature. When an administrator runs the thumbnail update process, malicious bookmark titles are returned via an AJAX response and inserted into the DOM using innerHTML without proper sanitization. The issue originates from the interaction between the backend thumbnail update endpoint and the frontend JavaScript responsible for rendering update progress. On the backend, the ThumbnailsController::ajaxUpdate method returns bookmark data formatted using the 'raw' formatter. This includes the unescaped bookmark title in the JSON response. On the client side, the script thumbnails-update.js processes this AJAX response and dynamically updates the progress interface. Administrators using the thumbnail synchronization feature are affected and exploitation could lead to session hijacking, privilege escalation, backdoor injection and f...

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

EPSS

Процентиль: 3%
0.0013
Низкий

5.8 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.8
nvd
около 2 месяцев назад

Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a DOM-based Cross-Site Scripting (XSS) vulnerability in the Thumbnail Synchronizer feature. When an administrator runs the thumbnail update process, malicious bookmark titles are returned via an AJAX response and inserted into the DOM using innerHTML without proper sanitization. The issue originates from the interaction between the backend thumbnail update endpoint and the frontend JavaScript responsible for rendering update progress. On the backend, the ThumbnailsController::ajaxUpdate method returns bookmark data formatted using the 'raw' formatter. This includes the unescaped bookmark title in the JSON response. On the client side, the script thumbnails-update.js processes this AJAX response and dynamically updates the progress interface. Administrators using the thumbnail synchronization feature are affected and exploitation could lead to session hijacking, privilege escalation, backdoor injection and full

CVSS3: 5.8
debian
около 2 месяцев назад

Shaarli is a personal bookmarking service. Versions 0.16.1 and prior c ...

EPSS

Процентиль: 3%
0.0013
Низкий

5.8 Medium

CVSS3

Уязвимость CVE-2026-48821