{"id":"CVE-2025-27608","aliases":["EUVD-2025-9623","GHSA-252h-4j5q-88pc"],"status":"published","title":"Self Cross-Site Scripting in Arduino IDE","description":"Arduino IDE 2.x is an IDE based on the Theia IDE framework and built with Electron. A Self Cross-Site Scripting (XSS) vulnerability has been identified within the Arduino-IDE prior to version v2.3.5. The vulnerability occurs in the Additional Board Manager URLs field, which can be found in the Preferences -\u003e Settings section of the Arduino IDE interface. In the vulnerable versions, any values entered in this field are directly displayed to the user through a notification tooltip object, without a proper output encoding routine, due to the underlying ElectronJS engine interpretation. This vulnerability exposes the input parameter to Self-XSS attacks, which may lead to security risks depending on where the malicious payload is injected. This vulnerability is fixed in 2.3.5.","severity":{"version":"4.0","score":1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00203,"percentile":0.10313,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2025-04-02T21:09:16Z","modified":"2026-10-28T02:30:35Z","products":[{"vendor":"arduino","product":"arduino-ide"}],"references":[{"url":"https://github.com/arduino/arduino-ide/security/advisories/GHSA-252h-4j5q-88pc","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/arduino/arduino-ide/commit/d298b3ffc94008e89066cd999d891e84190da18f","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27608.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27608","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-27608","title":"Self Cross-Site Scripting in Arduino IDE","description":"Arduino IDE 2.x is an IDE based on the Theia IDE framework and built with Electron. A Self Cross-Site Scripting (XSS) vulnerability has been identified within the Arduino-IDE prior to version v2.3.5. The vulnerability occurs in the Additional Board Manager URLs field, which can be found in the Preferences -\u003e Settings section of the Arduino IDE interface. In the vulnerable versions, any values entered in this field are directly displayed to the user through a notification tooltip object, without a proper output encoding routine, due to the underlying ElectronJS engine interpretation. This vulnerability exposes the input parameter to Self-XSS attacks, which may lead to security risks depending on where the malicious payload is injected. This vulnerability is fixed in 2.3.5.","status":"published","published":"2025-04-02T21:09:16.943Z","modified":"2025-04-03T14:01:53.189Z","cvss":[{"version":"4.0","score":1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","level":"low","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:42.411662Z"}],"euvd":[{"id":"EUVD-2025-9623","description":"Arduino IDE 2.x is an IDE based on the Theia IDE framework and built with Electron. A Self Cross-Site Scripting (XSS) vulnerability has been identified within the Arduino-IDE prior to version v2.3.5. The vulnerability occurs in the Additional Board Manager URLs field, which can be found in the Preferences -\u003e Settings section of the Arduino IDE interface. In the vulnerable versions, any values entered in this field are directly displayed to the user through a notification tooltip object, without a proper output encoding routine, due to the underlying ElectronJS engine interpretation. This vulnerability exposes the input parameter to Self-XSS attacks, which may lead to security risks depending on where the malicious payload is injected. This vulnerability is fixed in 2.3.5.","status":"published","published":"2025-04-02T21:09:16Z","modified":"2025-04-03T14:01:53Z","cvss":[{"version":"4.0","score":1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"updated_at":"2026-11-02T20:52:43.853284Z"}],"nvd":[{"id":"CVE-2025-27608","description":"Arduino IDE 2.x is an IDE based on the Theia IDE framework and built with Electron. A Self Cross-Site Scripting (XSS) vulnerability has been identified within the Arduino-IDE prior to version v2.3.5. The vulnerability occurs in the Additional Board Manager URLs field, which can be found in the Preferences -\u003e Settings section of the Arduino IDE interface. In the vulnerable versions, any values entered in this field are directly displayed to the user through a notification tooltip object, without a proper output encoding routine, due to the underlying ElectronJS engine interpretation. This vulnerability exposes the input parameter to Self-XSS attacks, which may lead to security risks depending on where the malicious payload is injected. This vulnerability is fixed in 2.3.5.","status":"published","published":"2025-04-02T22:15:19.51Z","modified":"2026-06-17T09:03:54.22Z","cvss":[{"version":"4.0","score":1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/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","level":"low","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:10:58.094557Z"}],"osv":[{"id":"CVE-2025-27608","title":"Self Cross-Site Scripting in Arduino IDE","description":"Arduino IDE 2.x is an IDE based on the Theia IDE framework and built with Electron. A Self Cross-Site Scripting (XSS) vulnerability has been identified within the Arduino-IDE prior to version v2.3.5. The vulnerability occurs in the Additional Board Manager URLs field, which can be found in the Preferences -\u003e Settings section of the Arduino IDE interface. In the vulnerable versions, any values entered in this field are directly displayed to the user through a notification tooltip object, without a proper output encoding routine, due to the underlying ElectronJS engine interpretation. This vulnerability exposes the input parameter to Self-XSS attacks, which may lead to security risks depending on where the malicious payload is injected. This vulnerability is fixed in 2.3.5.","status":"published","published":"2025-04-02T21:09:16.943Z","modified":"2026-10-28T02:30:35.30056326Z","cvss":[{"version":"4.0","score":1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:47.708311Z"}]}}