CVE-2020-26239 - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication Single

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

AV:N/AC:M/Au:S/C:N/I:P/A:N

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Scratchaddons	Scratch Addons

Configuration 1 [-]

cpe:2.3:a:scratchaddons:scratch_addons:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://github.com/ScratchAddons/ScratchAddons/blob/a471893df403f86c9182970678175d4772a0690c/addons/more-links/userscript.js#L15
https://github.com/ScratchAddons/ScratchAddons/commit/b9a52d6532c8514254c7cc1d8e18710dbedc41ff
https://github.com/ScratchAddons/ScratchAddons/releases/tag/v1.3.2
https://github.com/ScratchAddons/ScratchAddons/security/advisories/GHSA-6qfq-px3r-xj4p

History

No history.

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2020-11-23T19:05:15

Updated: 2024-08-04T15:56:04.027Z

Reserved: 2020-10-01T00:00:00

Link: CVE-2020-26239

Vulnrichment

No data.

NVD

Status : Analyzed

Published: 2020-11-23T19:15:11.117

Modified: 2020-12-03T13:43:40.090

Link: CVE-2020-26239

Redhat

No data.

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