Anonymous cache poisoning via request headers in Discourse
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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No data.
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Discourse | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-3079 | Discourse is an open source platform for community discussion. In affected versions an attacker can carefully craft a request with the right request headers to poison the anonymous cache (for example, the cache may have a response with missing preloaded data). This issue only affects anonymous visitors of the site. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade may disable anonymous cache by setting the `DISCOURSE_DISABLE_ANON_CACHE` environment variable to a non-empty value. |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.267% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
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epss
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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ssvc
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| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Description | Discourse is an open source platform for community discussion. In affected versions an attacker can carefully craft a request with the right request headers to poison the anonymous cache (for example, the cache may have a response with missing preloaded data). This issue only affects anonymous visitors of the site. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade may disable anonymous cache by setting the `DISCOURSE_DISABLE_ANON_CACHE` environment variable to a non-empty value. | |
| Title | Anonymous cache poisoning via request headers in Discourse | |
| Weaknesses | CWE-346 | |
| References |
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| Metrics |
cvssV3_1
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