Discourse vulnerable to XSS via user-provided query parameter in oauth failure flow
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| discourse | discourse | affected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Discourse | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-28274 | Discourse is an open-source discussion platform. Versions prior to 3.5.0.beta6 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0.beta6 patches the issue. As a workaround, have the content security policy enabled. |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.736% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs |
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:* cpe:2.3:a:discourse:discourse:3.5.0:-:*:*:beta:*:*:* cpe:2.3:a:discourse:discourse:3.5.0:beta1:*:*:beta:*:*:* cpe:2.3:a:discourse:discourse:3.5.0:beta2:*:*:beta:*:*:* cpe:2.3:a:discourse:discourse:3.5.0:beta3:*:*:beta:*:*:* cpe:2.3:a:discourse:discourse:3.5.0:beta4:*:*:beta:*:*:* cpe:2.3:a:discourse:discourse:3.5.0:beta5:*:*:beta:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Discourse is an open-source discussion platform. Versions prior to 3.5.0.beta6 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0.beta6 patches the issue. As a workaround, have the content security policy enabled. | |
| Title | Discourse vulnerable to XSS via user-provided query parameter in oauth failure flow | |
| Weaknesses | CWE-79 | |
| References |
| |
| Metrics |
cvssV3_1
|