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In affected versions more methods than expected can be called on reflex instances. Being able to call some of them has security implications. To invoke a reflex a websocket message of the following shape is sent: `\\\"target\\\":\\\"[class_name]#[method_name]\\\",\\\"args\\\":[]`. The server will proceed to instantiate `reflex` using the provided `class_name` as long as it extends `StimulusReflex::Reflex`. It then attempts to call `method_name` on the instance with the provided arguments. This is problematic as `reflex.method method_name` can be more methods that those explicitly specified by the developer in their reflex class. A good example is the instance_variable_set method. This vulnerability has been patched in versions 3.4.2 and 3.5.0.rc4. Users unable to upgrade should: see the backing GHSA advisory for mitigation advice."}],"source":{"advisory":"GHSA-f78j-4w3g-4q65","discovery":"UNKNOWN"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T00:48:49.423Z"},"title":"CVE Program Container","references":[{"name":"https://github.com/stimulusreflex/stimulus_reflex/security/advisories/GHSA-f78j-4w3g-4q65","tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/stimulusreflex/stimulus_reflex/security/advisories/GHSA-f78j-4w3g-4q65"},{"name":"https://github.com/stimulusreflex/stimulus_reflex/commit/538582d240439aab76066c72335ea92096cd0c7f","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/stimulusreflex/stimulus_reflex/commit/538582d240439aab76066c72335ea92096cd0c7f"},{"name":"https://github.com/stimulusreflex/stimulus_reflex/blob/0211cad7d60fe96838587f159d657e44cee51b9b/app/channels/stimulus_reflex/channel.rb#L83","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/stimulusreflex/stimulus_reflex/blob/0211cad7d60fe96838587f159d657e44cee51b9b/app/channels/stimulus_reflex/channel.rb#L83"},{"name":"https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.4.2","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.4.2"},{"name":"https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.5.0.rc4","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.5.0.rc4"},{"url":"http://seclists.org/fulldisclosure/2024/Mar/16","tags":["x_transferred"]}]},{"affected":[{"vendor":"stimulusreflex","product":"stimulus_reflex","cpes":["cpe:2.3:a:stimulusreflex:stimulus_reflex:*:*:*:*:*:*:*:*"],"defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"3.4.2","versionType":"custom"},{"version":"3.5.0.rc1","status":"affected","lessThan":"3.5.0.rc4","versionType":"custom"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-03-13T14:29:13.739952Z","id":"CVE-2024-28121","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-08-15T19:34:43.636Z"}}]}}