{"id":"CVE-2023-0609","aliases":["GHSA-qwx8-mxxx-mg96"],"url":"https://o3.security/vulnerability/CVE-2023-0609","summary":"Improper Authorization in wallabag/wallabag","details":"# Description\n\nThe export feature lets a user export a single entry or a set of entries in a given format (_e.g. PDF, MOBI, TXT_).\n\nFor example, `https://yourinstance.wallabag.org/export/45.pdf` will export the entry with id 45 in PDF format.\n\nSince wallabag 2.0.0-alpha.1, this feature is vulnerable to an insecure direct object reference attack. A logged user can export any single entry without ownership validation.\n\nThis is due to a lack of access validation in the `downloadEntryAction` method.\n\n**You should immediately patch your instance to version 2.5.3 or higher if you have more than one user and/or having open registration.**\n\n# Resolution\n\nA user check is now done in the vulnerable method before sending the exported entry.\n\nThe `Entry` retrieval through a `ParamConverter` has also been replaced with a call to the `EntryRepository` in order to prevent any information disclosure through response discrepancy.\n\n# Workaround\n\nIf you are unable to update to the latest version or if you want to temporarily limit risk of exploitation, you may consider blocking requests to the endpoint `/export/*`.\n\nE.g. with nginx:\n\n``` nginx\n    location /export {\n        deny all;\n    }\n```\n\n# Credits\n\nWe would like to thank @bAuh0lz for reporting this issue through huntr.dev.\n\nReference: https://www.huntr.dev/bounties/3adef66f-fc86-4e6d-a540-2ffa59342ff0/ ","published":"2023-02-01T00:00:00Z","modified":"2026-08-12T03:51:24.106346156Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"wallabag/wallabag","fixedVersion":"2.5.3"}],"fix":{"url":"https://github.com/wallabag/wallabag/commit/0f7460dbab9e29f4f7d2944aca20210f828b6abb","label":"wallabag/wallabag@0f7460d"},"references":[{"type":"WEB","url":"https://huntr.dev/bounties/3adef66f-fc86-4e6d-a540-2ffa59342ff0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0609.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0609"},{"type":"FIX","url":"https://github.com/wallabag/wallabag/commit/0f7460dbab9e29f4f7d2944aca20210f828b6abb"},{"type":"WEB","url":"https://github.com/wallabag/wallabag/security/advisories/GHSA-qwx8-mxxx-mg96"},{"type":"PACKAGE","url":"https://github.com/wallabag/wallabag"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:24.106346156Z"}}