{"id":"CVE-2025-31475","aliases":["EUVD-2025-10042","GHSA-4hwx-xcc5-2hfc"],"status":"published","title":"tarteaucitron.js allows prototype pollution via custom text injection","description":"tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where the addOrUpdate function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. An attacker with high privileges could exploit this vulnerability to modify object prototypes, affecting core JavaScript behavior, cause application crashes or unexpected behavior, or potentially introduce further security vulnerabilities depending on the application's architecture. This vulnerability is fixed in 1.20.1.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00351,"percentile":0.2909,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321"],"published":"2025-04-07T14:48:25Z","modified":"2026-10-28T02:30:53Z","fixes":[{"ecosystem":"npm","package":"tarteaucitronjs","fixed_in":["1.20.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"tarteaucitronjs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.1"}]}]},{"source":"osv","ecosystem":"npm","package":"tarteaucitronjs","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.20.1"}]}]}],"products":[{"vendor":"amauri","product":"tarteaucitronjs"},{"vendor":"amauric","product":"tarteaucitron.js"}],"references":[{"url":"https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-4hwx-xcc5-2hfc","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://github.com/AmauriC/tarteaucitron.js/commit/74c354c413ee3f82dff97a15a0a43942887c2b5b","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-31475","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4hwx-xcc5-2hfc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/31xxx/CVE-2025-31475.json","tags":["advisory"]},{"url":"https://github.com/AmauriC/tarteaucitron.js","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-31475","title":"tarteaucitron.js allows prototype pollution via custom text injection","description":"tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where the addOrUpdate function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. An attacker with high privileges could exploit this vulnerability to modify object prototypes, affecting core JavaScript behavior, cause application crashes or unexpected behavior, or potentially introduce further security vulnerabilities depending on the application's architecture. This vulnerability is fixed in 1.20.1.","status":"published","published":"2025-04-07T14:48:25.164Z","modified":"2025-04-07T15:49:42.4Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:32:44.424933Z"}],"euvd":[{"id":"EUVD-2025-10042","description":"tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where the addOrUpdate function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. An attacker with high privileges could exploit this vulnerability to modify object prototypes, affecting core JavaScript behavior, cause application crashes or unexpected behavior, or potentially introduce further security vulnerabilities depending on the application's architecture. This vulnerability is fixed in 1.20.1.","status":"published","published":"2025-04-07T14:48:25Z","modified":"2025-04-07T15:49:42Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:41.16494Z"}],"ghsa":[{"id":"GHSA-4hwx-xcc5-2hfc","title":"tarteaucitron.js allows prototype pollution via custom text injection","description":"A vulnerability was identified in `tarteaucitron.js`, where the `addOrUpdate` function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution.\n\n## Impact\nAn attacker with high privileges could exploit this vulnerability to:\n- Modify object prototypes, affecting core JavaScript behavior,\n- Cause application crashes or unexpected behavior,\n- Potentially introduce further security vulnerabilities depending on the application's architecture.\n\n## Fix https://github.com/AmauriC/tarteaucitron.js/commit/74c354c413ee3f82dff97a15a0a43942887c2b5b\nThe issue was resolved by ensuring that user-controlled inputs cannot modify JavaScript object prototypes.","status":"published","published":"2025-04-07T16:38:52Z","modified":"2025-04-07T16:38:54Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:38:38.344711Z"}],"nvd":[{"id":"CVE-2025-31475","description":"tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where the addOrUpdate function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. An attacker with high privileges could exploit this vulnerability to modify object prototypes, affecting core JavaScript behavior, cause application crashes or unexpected behavior, or potentially introduce further security vulnerabilities depending on the application's architecture. This vulnerability is fixed in 1.20.1.","status":"published","published":"2025-04-07T15:15:44.22Z","modified":"2026-06-17T09:10:28.01Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"primary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:10:59.48027Z"}],"osv":[{"id":"CVE-2025-31475","title":"tarteaucitron.js allows prototype pollution via custom text injection","description":"tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where the addOrUpdate function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. An attacker with high privileges could exploit this vulnerability to modify object prototypes, affecting core JavaScript behavior, cause application crashes or unexpected behavior, or potentially introduce further security vulnerabilities depending on the application's architecture. This vulnerability is fixed in 1.20.1.","status":"published","published":"2025-04-07T14:48:25.164Z","modified":"2026-10-28T02:30:53.136281583Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:44:48.02508Z"},{"id":"GHSA-4hwx-xcc5-2hfc","title":"tarteaucitron.js allows prototype pollution via custom text injection","description":"A vulnerability was identified in `tarteaucitron.js`, where the `addOrUpdate` function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution.\n\n## Impact\nAn attacker with high privileges could exploit this vulnerability to:\n- Modify object prototypes, affecting core JavaScript behavior,\n- Cause application crashes or unexpected behavior,\n- Potentially introduce further security vulnerabilities depending on the application's architecture.\n\n## Fix https://github.com/AmauriC/tarteaucitron.js/commit/74c354c413ee3f82dff97a15a0a43942887c2b5b\nThe issue was resolved by ensuring that user-controlled inputs cannot modify JavaScript object prototypes.","status":"published","published":"2025-04-07T16:38:52Z","modified":"2025-04-07T17:42:10.239292Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:37.148947Z"}]}}