CVE-2026-42887

{"id": "CVE-2026-42887", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42887", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-12T13:29:23.417280Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 0.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "advplyr", "product": "audiobookshelf", "versions": [{"status": "affected", "version": "< 2.33.0"}]}]}], "published": "2026-05-11T20:25:45.713", "references": [{"url": "https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-cx29-ghq2-9cm4", "source": "security-advisories@github.com"}, {"url": "https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-cx29-ghq2-9cm4", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.33.0, a stored cross-site scripting (XSS) vulnerability exists in the Login Page due to improper sanitization of the authLoginCustomMessage field of the /api/auth-settings endpoint. An attacker with administrative privileges can inject arbitrary HTML/JavaScript that will be rendered on the login page for all users. This vulnerability is fixed in 2.33.0."}], "lastModified": "2026-06-17T10:48:34.133", "sourceIdentifier": "security-advisories@github.com"}