{"id":"CVE-2026-42887","aliases":["EUVD-2026-29210","GHSA-cx29-ghq2-9cm4"],"status":"published","title":"Audiobookshelf: Stored Cross-Site Scripting in Login Page Custom Message","description":"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.","severity":{"version":"3.1","score":4.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00258,"percentile":0.17541,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-05-11T19:55:32Z","modified":"2026-10-28T02:30:49Z","products":[{"vendor":"advplyr","product":"audiobookshelf"}],"references":[{"url":"https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-cx29-ghq2-9cm4","tags":["x_refsource_CONFIRM","exploit","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42887.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42887","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-42887","title":"Audiobookshelf: Stored Cross-Site Scripting in Login Page Custom Message","description":"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.","status":"published","published":"2026-05-11T19:55:32.09Z","modified":"2026-05-12T13:29:46.446Z","cvss":[{"version":"3.1","score":4.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-29210","description":"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.","status":"published","published":"2026-05-11T19:55:32Z","modified":"2026-05-12T13:29:46Z","cvss":[{"version":"3.1","score":4.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:04:37.152927Z"}],"nvd":[{"id":"CVE-2026-42887","description":"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.","status":"published","published":"2026-05-11T20:25:45.713Z","modified":"2026-10-26T18:10:00.173Z","cvss":[{"version":"3.1","score":4.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:18.239974Z"}],"osv":[{"id":"CVE-2026-42887","title":"Audiobookshelf: Stored Cross-Site Scripting in Login Page Custom Message","description":"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.","status":"published","published":"2026-05-11T19:55:32.09Z","modified":"2026-10-28T02:30:49.060419363Z","cvss":[{"version":"3.1","score":4.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:04.117819Z"}]}}