XSS in Apache Livy
CVE-2021-26544
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.028 (86.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Apache Livy — versions 0.7.0-incubating
- Apache Software Foundation Livy (Incubating) — versions Apache Livy (Incubating) 0.7.0-incubating
Weakness classification (CWE)
References
- github.com/apache/incubator-livy/commit/4d8a912699683b973eee76d4e91447d769a0cb0d (Patch, Third Party Advisory)
- lists.apache.org/thread.html/r2db14e7fd1e5ec2519e8828d43529bad623d75698cc7918af… (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/02/20/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-26544?
- CVE-2021-26544 is a medium-severity vulnerability in Apache Livy, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-02-20.
- How severe is CVE-2021-26544?
- Medium severity. CVSS v3 base score is 5.4 out of 10.