{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-75510",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-17T20:49:21.598Z",
        "datePublished": "2026-09-22T15:47:19.922Z",
        "dateUpdated": "2026-09-22T15:59:27.761Z"
    },
    "containers": {
        "cna": {
            "title": "Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "LOW",
                        "subIntegrityImpact": "LOW",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 5.1,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp"
                },
                {
                    "name": "https://github.com/novuhq/novu/pull/11453",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/novuhq/novu/pull/11453"
                },
                {
                    "name": "https://github.com/novuhq/novu/commit/f105f3d41a4405a75f803634d49f15a967524d8a",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/novuhq/novu/commit/f105f3d41a4405a75f803634d49f15a967524d8a"
                },
                {
                    "name": "https://github.com/novuhq/novu/releases/tag/v3.18.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/novuhq/novu/releases/tag/v3.18.0"
                }
            ],
            "affected": [
                {
                    "vendor": "novuhq",
                    "product": "novu",
                    "versions": [
                        {
                            "version": "< 3.18.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-22T15:47:19.922Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Novu provides an API for sending notifications through multiple channels. Prior to 3.18.0, Novu's @novu/js In-App Inbox and the @novu/react Inbox component accept a notification call-to-action redirect.url from the v1 cta.data object and pass it through apps/api/src/app/inbox/utils/notification-mapper.ts and packages/js/src/ui/components/Notification/DefaultNotification.tsx to the navigate function in packages/js/src/ui/context/InboxContext.tsx without validating its URL scheme. An authenticated organization member or environment API-key holder can store a javascript: redirect with target _self in an in-app workflow. When a recipient using a Chromium-based browser clicks the notification, window.open executes the redirect in the current inbox-hosting origin, which can expose session material and permit authenticated actions in a customer application or the self-hosted Novu dashboard. This issue is fixed in version 3.18.0."
                }
            ],
            "source": {
                "advisory": "GHSA-8gr3-5j6f-25gp",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-22T15:59:07.979961Z",
                                "id": "CVE-2026-75510",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-22T15:59:27.761Z"
                }
            }
        ]
    }
}