{"id":"CVE-2026-88055","summary":"AnythingLLM: Stored XSS Due to Unescaped Server-Side HTML Concatenation in MetaGenerator","details":"AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. In 1.16.1 and earlier, the manager role can store meta_page_title or meta_page_favicon through /api/admin/system-preferences, and MetaGenerator inserts those values into production homepage HTML without escaping attribute values or text content. The values pass unchanged through server/models/systemSettings.js and reach MetaGenerator.generate() in server/index.js. #assembleMeta() in server/utils/boot/MetaGenerator.js concatenates the stored values into HTML. When an administrator visits the homepage /, injected JavaScript can read the administrator JWT and use it to create API keys, access or modify workspace and chat data, delete users, and perform other administrator actions. server/endpoints/admin.js accepts the manager-controlled settings before server/models/systemSettings.js returns them unchanged. No fixed version is available as of this review.","aliases":["GHSA-rh3m-xv7m-9jhf"],"modified":"2026-09-12T03:47:21.980341499Z","published":"2026-09-10T17:53:16.150Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88055.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-79"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88055.json"},{"type":"ADVISORY","url":"https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-rh3m-xv7m-9jhf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88055"},{"type":"FIX","url":"https://github.com/Mintplex-Labs/anything-llm/commit/6dff9d71ab585e87a3145a48abc63c2b60151149"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mintplex-labs/anything-llm","events":[{"introduced":"0"},{"fixed":"6dff9d71ab585e87a3145a48abc63c2b60151149"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"1.16.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v1.16.1","v1.14.1","v1.14.0","v1.13.0","v1.12.1","v1.12.0","v1.11.2","v1.11.1","v1.11.0","v1.10.0","v1.9.1","v1.9.0","v1.8.5","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.8","v1.7.6","v1.7.5","v1.7.4","v1.4.0","v1.3.0","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.1","v1.1.0","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88055.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N"}]}