CVE-2020-26239

MITTEL 5.4CVE-2020-26239 · Published 23/11/2020 · updated 17/06/2026

Kurz gesagt

CVE-2020-26239 ist eine Schwachstelle (MITTEL (CVSS 5.4)) in scratch addons (scratchaddons).
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 1.0%, höher als bei 63.9% aller Schwachstellen.
Abhilfe: auf 1.3.2 oder neuer aktualisieren.

Package	Affected versions	Patched versions
scratch addons scratchaddons	`< 1.3.2`	`1.3.2`

Description

Scratch Addons is a WebExtension that supports both Chrome and Firefox. Scratch Addons before version 1.3.2 is vulnerable to DOM-based XSS. If the victim visited a specific website, the More Links addon of the Scratch Addons extension used incorrect regular expression which caused the HTML-escaped values to be unescaped, leading to XSS. Scratch Addons version 1.3.2 fixes the bug. The extension will be automatically updated by the browser. More Links addon can be disabled via the option of the extension.

References

ScratchAddons/ScratchAddons · Third Party Advisory
ScratchAddons/ScratchAddons commit b9a52d6 · Patch
ScratchAddons/ScratchAddons release v1.3.2 · Release Notes
ScratchAddons/ScratchAddons security advisory · Patch

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