{"id":"CVE-2021-22563","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-22563","generatedAt":"2026-10-27T23:29:12.083Z","title":"Invalid JPEG XL images using libjxl can cause an out of bounds access on a std::vector<std::vector<T>> when rendering splines.","description":"Invalid JPEG XL images using libjxl can cause an out of bounds access on a std::vector<std::vector<T>> when rendering splines. The OOB read access can either lead to a segfault, or rendering splines based on other process memory. It is recommended to upgrade past 0.6.0 or patch with https://github.com/libjxl/libjxl/pull/757","published":"2021-11-01T13:15:08.000Z","lastModified":"2026-06-17T03:37:26.000Z","status":"Modified","sourceIdentifier":"cve-coordination@google.com","cvss":{"version":"3.1","score":4.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"},"cwe":["CWE-126","CWE-125"],"affected":["libjxl project/libjxl"],"epss":{"score":0.00311,"percentile":0.23726,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/libjxl/libjxl/issues/735","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://github.com/libjxl/libjxl/pull/757","tags":["Patch","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://github.com/libjxl/libjxl/issues/735","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libjxl/libjxl/pull/757","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-22563","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}