{"id":"CVE-2026-21430","summary":"Emlog: CSRF chained with stored XSS leads to ATO","details":"Emlog is an open source website building system. In version 2.5.23, article creation functionality is vulnerable to cross-site request forgery (CSRF). This can lead to a user being forced to post an article with arbitrary, attacker-controlled content. This, when combined with stored cross-site scripting, leads to account takeover. As of time of publication, no known patched versions are available.","aliases":["GHSA-2g2w-vmg7-pq4q"],"modified":"2026-08-12T03:51:12.158789575Z","published":"2026-01-02T18:44:24.192Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-352","CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21430.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21430.json"},{"type":"ADVISORY","url":"https://github.com/emlog/emlog/security/advisories/GHSA-2g2w-vmg7-pq4q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21430"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/emlog/emlog","events":[{"introduced":"357cf42d18ae7dc6296728a737c16c835e9ec159"},{"last_affected":"357cf42d18ae7dc6296728a737c16c835e9ec159"}],"database_specific":{"extracted_events":[{"introduced":"= 2.5.23"},{"last_affected":"= 2.5.23"},{"introduced":"2.5.23"},{"last_affected":"2.5.23"}],"source":["AFFECTED_FIELD","CPE_STRING"],"cpe":"cpe:2.3:a:emlog:emlog:2.5.23:*:*:*:pro:*:*:*"}}],"versions":["2.5.23","= 2.5.23","pro-2.5.23"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21430.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:P"}]}