{"cve":"CVE-2021-26544","nvd":{"published":"2021-02-20T09:15:12.377","modified":"2026-06-17T03:43:27.760","status":"Modified","description":"Livy server version 0.7.0-incubating (only) is vulnerable to a cross site scripting issue in the session name. A malicious user could use this flaw to access logs and results of other users' sessions and run jobs with their privileges. This issue is fixed in Livy 0.7.1-incubating.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["http://www.openwall.com/lists/oss-security/2021/02/20/1","https://github.com/apache/incubator-livy/commit/4d8a912699683b973eee76d4e91447d769a0cb0d","https://lists.apache.org/thread.html/r2db14e7fd1e5ec2519e8828d43529bad623d75698cc7918af3a3f3ed%40%3Cuser.livy.apache.org%3E","http://www.openwall.com/lists/oss-security/2021/02/20/1","https://github.com/apache/incubator-livy/commit/4d8a912699683b973eee76d4e91447d769a0cb0d"],"products":["apache:livy"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-26544","score":0.02816,"percentile":0.86551,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-74qp-233x-p5j8","url":"https://osv.dev/vulnerability/GHSA-74qp-233x-p5j8","summary":"Apache Livy Cross-site scripting (XSS) in session names","modified":"2023-11-08T04:05:21.339591Z","packages":[{"ecosystem":"Maven","name":"org.apache.livy:livy-server","purl":"pkg:maven/org.apache.livy/livy-server","ranges":[">=0.7.0-incubating <0.7.1-incubating"],"fixed":["0.7.1-incubating"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}