{"url":"http://public2.vulnerablecode.io/api/packages/1024080?format=json","purl":"pkg:npm/locize@4.0.0","type":"npm","namespace":"","name":"locize","version":"4.0.0","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"4.0.21","latest_non_vulnerable_version":"4.0.21","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/81003?format=json","vulnerability_id":"VCID-h71w-tbgw-uqcw","summary":"locize is a localization platform that connects code and i18n setup. Prior to version 4.0.21, the locize client SDK registers a window.addEventListener(\"message\", …) handler that dispatches to registered internal handlers (editKey, commitKey, commitKeys, isLocizeEnabled, requestInitialize, …) without validating event.origin. The pre-patch listener in src/api/postMessage.js gates dispatch on event.data.sender === \"i18next-editor-frame\" — that value sits inside the attacker-controlled message payload, not the browser-enforced origin. Any web page that could embed or be embedded by a locize-enabled host — an iframe on a third-party page, a window.open-ed victim, a parent frame reaching down — could send a crafted postMessage and trigger the internal handlers. This issue has been patched in version 4.0.21.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-41886","reference_id":"","reference_type":"","scores":[{"value":"0.00018","scoring_system":"epss","scoring_elements":"0.04799","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-41886"},{"reference_url":"https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage#security_concerns","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage#security_concerns"},{"reference_url":"https://github.com/locize/locize","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/locize/locize"},{"reference_url":"https://github.com/locize/locize/commit/d006b75fadb8e8ab77b023e462850fc6e9170735","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/locize/locize/commit/d006b75fadb8e8ab77b023e462850fc6e9170735"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41886","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41886"},{"reference_url":"https://github.com/advisories/GHSA-w937-fg2h-xhq2","reference_id":"GHSA-w937-fg2h-xhq2","reference_type":"","scores":[],"url":"https://github.com/advisories/GHSA-w937-fg2h-xhq2"},{"reference_url":"https://github.com/locize/locize/security/advisories/GHSA-w937-fg2h-xhq2","reference_id":"GHSA-w937-fg2h-xhq2","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-08T17:09:37Z/"}],"url":"https://github.com/locize/locize/security/advisories/GHSA-w937-fg2h-xhq2"},{"reference_url":"https://github.com/locize/locize/releases/tag/v4.0.21","reference_id":"v4.0.21","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-08T17:09:37Z/"}],"url":"https://github.com/locize/locize/releases/tag/v4.0.21"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/374238?format=json","purl":"pkg:npm/locize@4.0.21","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/locize@4.0.21"}],"aliases":["CVE-2026-41886","GHSA-w937-fg2h-xhq2"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-h71w-tbgw-uqcw"}],"fixing_vulnerabilities":[],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/locize@4.0.0"}