{"id":"CVE-2026-72832","summary":"Grav before 2.0.12 Stored XSS via quoted-attribute bypass","details":"Grav versions from 1.5.2 through 2.0.12 contain a stored cross-site scripting vulnerability in the Security::detectXss() function (system/src/Grav/Common/Security.php). The event-handler scan is anchored at `\u003c` and uses `[^\u003e]*?`, which cannot cross the first literal `\u003e`; when a `\u003e` appears inside a quoted attribute value the browser keeps the tag open and parses a subsequent event handler (e.g. onerror), so the detector and browser disagree. A page editor without admin.super privileges can save page content such as `\u003cimg src=x title=\"\u003e\" onerror=alert(document.domain)\u003e`, which is accepted, stored, and executed in the site origin when any visitor (including unauthenticated users) views the page. Fixed in 2.0.13.","aliases":["GHSA-269c-h76q-8cxw"],"modified":"2026-08-16T03:48:48.303069043Z","published":"2026-08-14T11:35:38.484Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72832.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72832.json"},{"type":"ADVISORY","url":"https://github.com/getgrav/grav/security/advisories/GHSA-269c-h76q-8cxw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72832"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/grav-before-stored-xss-via-quoted-attribute-bypass"},{"type":"FIX","url":"https://github.com/getgrav/grav/commit/ad9709f865b09b68798fb1ac375b484a8cc1d892"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/getgrav/grav","events":[{"introduced":"0e973dab07326f4818afe4d7e725fffd8616e117"},{"fixed":"7453f3bbd7c9017a2d3029db5c36e4cb41c4967d"},{"fixed":"ad9709f865b09b68798fb1ac375b484a8cc1d892"}],"database_specific":{"extracted_events":[{"introduced":"1.5.2"},{"fixed":"2.0.12"}],"source":["DESCRIPTION","REFERENCES"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72832.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N"}]}