{"id":"EUVD-2026-32527","revision":null,"records":[{"revision":"9c40202f0b6940f1ad78a38aab817651","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-42184","aliases":[],"title":"Tauri: Origin Confusion Allows Remote Pages to Invoke Local-Only IPC Commands","description":"Tauri is a framework for building binaries for all major desktop platforms. From 2.0 to 2.11.0, a flaw in Tauri's is_local_url() function causes it to incorrectly classify remote URLs as trusted local origins on Windows and Android. On these systems, Tauri maps custom URI scheme protocols to http://<scheme>.localhost/ because those platforms' WebView implementations cannot serve custom URI schemes directly. The issue is that Tauri's check to see if the origin is local, only checks the first subdomain of the URL. An attacker can abuse this by hosting a page on a domain whose subdomain matches the custom scheme of the application. This vulnerability is fixed in 2.10.3.","state":0,"publishedAt":"2026-05-27T14:29:53.825+00:00","modifiedAt":"2026-05-27T15:40:09.463+00:00","affected":[{"ecosystem":"Vendor product","name":"tauri","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"tauri-apps\",\n                    \"product\": \"tauri\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.0, < 2.11.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/tauri-apps/tauri/security/advisories/GHSA-7gmj-67g7-phm9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-42184","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-42184","identifiers":["CVE-2026-42184"]},"retained":false,"historicalAffected":[]},{"revision":"340f43aa5a2845e4986f4b176ac1b7f5","observedAt":"2026-11-07T09:32:19.557+00:00","statement":{"source":"euvd","id":"EUVD-2026-32527","aliases":["CVE-2026-42184","GHSA-7gmj-67g7-phm9"],"title":"Tauri is a framework for building binaries for all major desktop platforms. From 2.0 to 2.11.0, a flaw in Tauri's is_local_url() function causes it to incorrectly classify remote URLs as trusted local origins on Windows and Android. On thes…","description":"Tauri is a framework for building binaries for all major desktop platforms. From 2.0 to 2.11.0, a flaw in Tauri's is_local_url() function causes it to incorrectly classify remote URLs as trusted local origins on Windows and Android. On these systems, Tauri maps custom URI scheme protocols to http://<scheme>.localhost/ because those platforms' WebView implementations cannot serve custom URI schemes directly. The issue is that Tauri's check to see if the origin is local, only checks the first subdomain of the URL. An attacker can abuse this by hosting a page on a domain whose subdomain matches the custom scheme of the application. This vulnerability is fixed in 2.10.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","score":6.1,"severity":null}],"references":["https://github.com/tauri-apps/tauri/security/advisories/GHSA-7gmj-67g7-phm9"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32527","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 27, 2026, 2:29:53 PM","dateUpdated":"May 27, 2026, 3:40:09 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. 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On these systems, Tauri maps custom URI scheme protocols to http://<scheme>.localhost/ because those platforms' WebView implementations cannot serve custom URI schemes directly. The issue is that Tauri's check to see if the origin is local, only checks the first subdomain of the URL. An attacker can abuse this by hosting a page on a domain whose subdomain matches the custom scheme of the application. This vulnerability is fixed in 2.10.3.","state":0,"publishedAt":"2026-05-27T15:16:27.56+00:00","modifiedAt":"2026-10-26T11:10:00.157+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.1,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://github.com/tauri-apps/tauri/security/advisories/GHSA-7gmj-67g7-phm9"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-42184","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-918"],"productCriteria":["cpe:2.3:a:tauri:tauri:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-05-27T15:16:27.560","lastModified":"2026-10-26T11:10:00.157"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-42184","identifiers":["CVE-2026-42184"]},"retained":false,"historicalAffected":[]},{"revision":"9c8b327548a242b2b7036e8b8b1029ba","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-7gmj-67g7-phm9","aliases":["CVE-2026-42184"],"title":"Tauri has an Origin Confusion Issue that Allows Remote Pages to Invoke Local-Only IPC Commands","description":"### Summary\nA flaw in Tauri's `is_local_url()` function causes it to incorrectly classify remote URLs as trusted local origins on Windows and Android. On these systems, Tauri maps custom URI scheme protocols to `http://<scheme>.localhost/` because those platforms' WebView implementations cannot serve custom URI schemes directly.\n\nThe issue is that Tauri's check to see if the origin is local, only checks the first subdomain of the URL. An attacker can abuse this by hosting a page on a domain whose subdomain matches the custom scheme of the application (e.g. http://app.attacker.com/).\"\n\nExample:\n- Local URL: `app://localhost/` → on Android/Windows: `http://app.localhost/`\n- The check passes for any URL starting with `http://app.`, including `http://app.evil.com/`\n\nAs a result, the attacker page can invoke backend commands that the developer intended to be accessible only to the app's own frontend and that are explicitly restricted from being called by external or remote origins.\n\n### Details\nVulnerable function:\n\n```rust\n#[cfg(any(windows, target_os = \"android\"))]\nlet local = {\n  let protocol_url = self.manager().tauri_protocol_url(uses_https);\n  let maybe_protocol = current_url\n    .domain()\n    .and_then(|d| d.split_once('.'))  // BUG: only splits on first dot\n    .unwrap_or_default()\n    .0;\n\n  protocols.contains_key(maybe_protocol) && scheme == protocol_url.scheme()\n};\n```\n\nLink: https://github.com/tauri-apps/tauri/blob/1ef6a119b1571d1da0acc08bdb7fd5521a4c6d52/crates/tauri/src/webview/mod.rs#L1680\n\n`split_once('.')` discards everything after the first `.`. For http://app.evil.com/, the extracted label is app. If the application has registered a protocol named app, `protocols.contains_key(\"app\")` returns `true` and the URL is classified as `Origin::Local`. The correct check must assert the full domain is exactly `<protocol>.localhost`.\n\n### PoC\nWe created a proof of concept app that can be found [here](https://drive.google.com/file/d/1YME6YMSKv69JxFF7Ne0OrZ6tGC_OH7Jw/view?usp=sharing). The app registers a custom app:// protocol and exposes a ping command restricted to local origins only. It provides a button to open a URL in a WebView, pre-filled with https://app.robbe-bc9.workers.dev/, an attacker-controlled page that invokes ping on load. Because the domain's first label matches the registered app protocol, is_local_url() classifies it as a local origin and the command succeeds.\n\n`capabilities/main.json` contains the following code, which only exposes `ping` locally:\n\n```json\n{\n  \"$schema\": \"../../../crates/tauri-schema-generator/schemas/capability.schema.json\",\n  \"identifier\": \"main\",\n  \"local\": true,\n  \"windows\": [\"*\"],\n  \"permissions\": [\n    \"sample:allow-ping\"\n  ]\n}\n```\n\n`src/lib.rs` contains the following code, to register a custom scheme:\n\n```rust\ntauri::Builder::default()\n  .register_uri_scheme_protocol(\"app\", |_ctx, _request| { ... })\n```\n\n### Impact\nThe attacker page can invoke backend commands that the developer intended to be accessible only to the app's own frontend and that are explicitly restricted from being called by external or remote origins.","state":0,"publishedAt":"2026-05-06T16:58:35+00:00","modifiedAt":"2026-06-08T23:45:13.3479925+00:00","affected":[{"ecosystem":"crates.io","name":"tauri","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0"},{"kind":"fixed","version":"2.11.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/tauri-apps/tauri/security/advisories/GHSA-7gmj-67g7-phm9","https://nvd.nist.gov/vuln/detail/CVE-2026-42184","https://github.com/tauri-apps/tauri"],"sourceUrl":"https://github.com/advisories/GHSA-7gmj-67g7-phm9","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-7gmj-67g7-phm9","identifiers":["GHSA-7gmj-67g7-phm9","CVE-2026-42184"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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