Cross-Site Scripting in Scratch browser addons
Published Nov 23, 2020
7.6
HIGHCVSS 3.1
EPSS 1.03%
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.
Affected products
-
- Version < 1.3.2StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ScratchAddons | ScratchAddons | n/a |
|
- < 1.3.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (4)
- https://github.com/ScratchAddons/ScratchAddons/blob/a471893df403f86c9182970678175d4772a0690c/addons/more-links/userscript.js#L15 x_refsource_MISCThird Party Advisory
- https://github.com/ScratchAddons/ScratchAddons/commit/b9a52d6532c8514254c7cc1d8e18710dbedc41ff x_refsource_MISCPatchThird Party Advisory
- https://github.com/ScratchAddons/ScratchAddons/releases/tag/v1.3.2 x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/ScratchAddons/ScratchAddons/security/advisories/GHSA-6qfq-px3r-xj4p x_refsource_CONFIRMPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/ScratchAddons/ScratchAddons/blob/a471893df403f86c9182970678175d4772a0690c/addons/more-links/userscript.js#L15 | x_refsource_MISCThird Party Advisory | |
| https://github.com/ScratchAddons/ScratchAddons/commit/b9a52d6532c8514254c7cc1d8e18710dbedc41ff | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/ScratchAddons/ScratchAddons/releases/tag/v1.3.2 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://github.com/ScratchAddons/ScratchAddons/security/advisories/GHSA-6qfq-px3r-xj4p | x_refsource_CONFIRMPatchThird Party Advisory |
Change history (0)
No recorded changes yet.