{"url":"http://public2.vulnerablecode.io/api/packages/73113?format=json","purl":"pkg:npm/clevertap-web-sdk@1.15.3","type":"npm","namespace":"","name":"clevertap-web-sdk","version":"1.15.3","qualifiers":{},"subpath":"","is_vulnerable":false,"next_non_vulnerable_version":null,"latest_non_vulnerable_version":null,"affected_by_vulnerabilities":[],"fixing_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/22838?format=json","vulnerability_id":"VCID-dkj6-wnb8-s7ba","summary":"CleverTap Web SDK is vulnerable to DOM-based Cross-Site Scripting (XSS) via window.postMessage\nCleverTap Web SDK version 1.15.2 and earlier is vulnerable to DOM-based Cross-Site Scripting (XSS) via window.postMessage in the Visual Builder module. The origin validation in src/modules/visualBuilder/pageBuilder.js (lines 56-60) uses the includes() method to verify the originUrl contains \"dashboard.clevertap.com\", which can be bypassed by an attacker using a crafted subdomain.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-26862","reference_id":"","reference_type":"","scores":[{"value":"0.00021","scoring_system":"epss","scoring_elements":"0.06163","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-26862"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/CleverTap/clevertap-web-sdk"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/blob/cf1b65d/src/modules/visualBuilder/pageBuilder.js#L56-L60","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-27T19:38:39Z/"}],"url":"https://github.com/CleverTap/clevertap-web-sdk/blob/cf1b65d/src/modules/visualBuilder/pageBuilder.js#L56-L60"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/commit/766f75f0c9082a27eb0b59c9fa4b0d9b19ba3d10","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/CleverTap/clevertap-web-sdk/commit/766f75f0c9082a27eb0b59c9fa4b0d9b19ba3d10"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/commit/84695b726a751614ddc3a4f71382c239c5833e03","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/CleverTap/clevertap-web-sdk/commit/84695b726a751614ddc3a4f71382c239c5833e03"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/issues/442","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-27T19:38:39Z/"}],"url":"https://github.com/CleverTap/clevertap-web-sdk/issues/442"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/pull/417","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-27T19:38:39Z/"}],"url":"https://github.com/CleverTap/clevertap-web-sdk/pull/417"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26862","reference_id":"CVE-2026-26862","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26862"},{"reference_url":"https://github.com/advisories/GHSA-jfrq-hj9f-c8qx","reference_id":"GHSA-jfrq-hj9f-c8qx","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-jfrq-hj9f-c8qx"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/73113?format=json","purl":"pkg:npm/clevertap-web-sdk@1.15.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/clevertap-web-sdk@1.15.3"}],"aliases":["CVE-2026-26862","GHSA-jfrq-hj9f-c8qx"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-dkj6-wnb8-s7ba"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/22855?format=json","vulnerability_id":"VCID-fxft-3dqb-qbb9","summary":"CleverTap Web SDK  is vulnerable to DOM-based XSS via handleCustomHtmlPreviewPostMessageEvent function\nCleverTap Web SDK version 1.15.2 and earlier is vulnerable to Cross-site Scripting (XSS) via window.postMessage. The handleCustomHtmlPreviewPostMessageEvent function in src/util/campaignRender/nativeDisplay.js performs insufficient origin validation using the includes() method, which can be bypassed by an attacker using a subdomain.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-26861","reference_id":"","reference_type":"","scores":[{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.01072","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-26861"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/CleverTap/clevertap-web-sdk"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/blob/cf1b65d/src/util/campaignRender/nativeDisplay.js#L118-L121","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-27T19:42:32Z/"}],"url":"https://github.com/CleverTap/clevertap-web-sdk/blob/cf1b65d/src/util/campaignRender/nativeDisplay.js#L118-L121"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/commit/84695b726a751614ddc3a4f71382c239c5833e03","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/CleverTap/clevertap-web-sdk/commit/84695b726a751614ddc3a4f71382c239c5833e03"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/issues/424","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-27T19:42:32Z/"}],"url":"https://github.com/CleverTap/clevertap-web-sdk/issues/424"},{"reference_url":"https://github.com/CleverTap/clevertap-web-sdk/pull/417","reference_id":"","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-27T19:42:32Z/"}],"url":"https://github.com/CleverTap/clevertap-web-sdk/pull/417"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26861","reference_id":"CVE-2026-26861","reference_type":"","scores":[{"value":"8.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26861"},{"reference_url":"https://github.com/advisories/GHSA-j5mf-6rh3-rhgg","reference_id":"GHSA-j5mf-6rh3-rhgg","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-j5mf-6rh3-rhgg"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/73113?format=json","purl":"pkg:npm/clevertap-web-sdk@1.15.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/clevertap-web-sdk@1.15.3"}],"aliases":["CVE-2026-26861","GHSA-j5mf-6rh3-rhgg"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-fxft-3dqb-qbb9"}],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/clevertap-web-sdk@1.15.3"}