baserCMS: Unauthenticated Stored XSS via Shortcode Expansion in Blog Comments
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| baserproject | basercms | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Baserproject | Basercms |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.421% probability within 30 days)
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
Baserproject
Baserproject basercms |
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| Vendors & Products |
Baserproject
Baserproject basercms |
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| Description | baserCMS is a website development framework. In versions 5.0.0 before 5.3.2 and 5.4.0 before 5.4.2, global shortcode expansion runs over the complete rendered page, including HTML-escaped blog comments supplied by unauthenticated visitors. A comment containing the BcBaser.getGoogleMaps shortcode can set apiBaseUrl to an attacker-controlled script URL, which is emitted as a script src and executes JavaScript on the site's origin when another visitor or administrator opens the article displaying that comment. Escaping raw HTML in comments does not prevent this stored cross-site scripting because shortcode processing happens after HTML rendering. Other registered shortcodes also expand in comments; Mail.getForm can embed a working contact form with a valid CSRF token. The flaw can compromise the authenticated browser context of an administrator who views the affected article. This issue has been patched in versions 5.3.2 and 5.4.2. | |
| Title | baserCMS: Unauthenticated Stored XSS via Shortcode Expansion in Blog Comments | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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