css_parser allows to MITM included https css urls
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| premailer | css_parser | affected |
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| Vendor | Product | Versions | ||||||||||||
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| Premailer | Css Parser |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-ff6c-w6qf-7xqc | CSS Parser: Improper Certificate Validation allows MITM injection of remote CSS content |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.146% 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 |
Premailer
Premailer css Parser |
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| Vendors & Products |
Premailer
Premailer css Parser |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | css_parser is a Ruby CSS parser. Prior to 2.1.0 and 1.22.0, the CSS Parser gem does not validate HTTPS connections, allowing a Man-in-the-Middle (MITM) attacker to inject or modify CSS content when stylesheets are loaded via HTTPS. The connection is established with OpenSSL::SSL::VERIFY_NONE, meaning any HTTPS certificate—even entirely untrusted—will be accepted without validation. This vulnerability is fixed in 2.1.0 and 1.22.0. | |
| Title | css_parser allows to MITM included https css urls | |
| Weaknesses | CWE-295 CWE-829 |
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| References |
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| Metrics |
cvssV3_1
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