Server-Side Request Forgery (SSRF) in activitypub_federation
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| LemmyNet | lemmy | affected |
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| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-4082 | Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypub_federation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypub_federation and versions 0.19.8 and prior of Lemmy, allows a user to bypass any predefined hardcoded URL path or security anti-Localhost mechanism and perform an arbitrary GET request to any Host, Port and URL using a Webfinger Request. As of time of publication, a fix has not been made available. |
Github GHSA |
GHSA-7723-35v7-qcxw | Server-Side Request Forgery (SSRF) in activitypub_federation |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.418% probability within 30 days)
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| Metrics |
ssvc
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| Description | Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypub_federation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypub_federation and versions 0.19.8 and prior of Lemmy, allows a user to bypass any predefined hardcoded URL path or security anti-Localhost mechanism and perform an arbitrary GET request to any Host, Port and URL using a Webfinger Request. As of time of publication, a fix has not been made available. | |
| Title | Server-Side Request Forgery (SSRF) in activitypub_federation | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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